How to increase the volume on Android through engineering. Android from A to Z: Increase the maximum volume on any Android device
Probably many smartphone owners have encountered volume problems. For example, I was not happy with two things. The first is the quiet sound of the speaker when incoming call, and the second is a very loud sound in the headphones when there is an incoming call.
A little about how Android controls volume
If no headset is connected to your gadget (headphones, hands-free, etc.), then the volume settings will be the same, but as soon as you connect the headset, the settings will be different. For a general understanding, I will tell you a few examples.
Example 1. You listen to music on your phone, turn on the loud speaker at full power, and when you connect a headset to it and turn on the loud speaker again, the volume may differ (it can be louder or lower, depending on what model of phone or firmware version).
Example 2. You are watching a movie with headphones, the volume (meaning the multimedia volume) is set to 40% and then after a while you have an incoming call, then the volume in the headphones will change to the general volume, in which case you can get a powerful sound shock to your ears. Believe me, I jumped off the couch more than once in such cases, the fact is that the programmers did not set up the volume modes well.
Example 3. You're on a call and need to switch to speakerphone mode, and you notice that the speaker isn't as loud (or vice versa) as when listening to music; or your partner has become difficult to hear you, this is because in different modes the microphone may have different sensitivity. Also, when you connect a headset in the same situation and turn on the speakerphone mode, the settings are different again. This is how Android controls volume.
Let's learn the theory of the engineering menu
So let's look at what and how you can do if you tinker a little with the “Engineering Menu”.
Before making any changes, we recommend that you read the entire article, understand it, and then experiment. Also, take a piece of paper and write down all the default values in case something goes wrong. You can launch the engineering menu using a telephone dialer: enter the following combinations on it (Fig. 1):
figure 1
*#*#54298#*#* or *#*#3646633#*#* or *#*#83781#*#* – smartphones based on MTK processor
*#*#8255#*#* or *#*#4636#*#* – Samsung smartphones
*#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* – HTC smartphones
*#*#7378423#*#* – Sony smartphones
*#*#3646633#*#* – Fly, Alcatel, Philips smartphones
*#*#2846579#*#* – Huawei smartphones
Congratulations, you have entered the engineering menu (Fig. 2). Keep in mind that the menu structure on different phones may differ slightly in structure. Find the “Audio” section and go into it. After logging in, we see a bunch of unknown lines (modes) (Fig. 3). Here's what these modes mean in Android:
Figure 2 Figure 3
— Normal Mode(Settings section in normal or normal mode) – this mode is active when nothing is connected to the smartphone;
— Headset Mode(headset mode) – this mode is activated after connecting headphones or external speakers;
— Loud Speaker Mode(speaker mode) – it is activated when nothing is connected to the smart phone, and you turn on the speakerphone while talking on the phone;
— Headset_LoudSpeaker Mode(speaker mode with a headset connected) – this mode is activated when you connect headphones or external speakers to the smart phone, and you turn on the speakerphone while talking on the phone;
— Speech Enhancement(phone conversation mode) – this mode is activated in the normal mode of telephone conversations, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.
It’s best not to poke your nose into the last three sections:
— Debug Info– it’s not clear why – info on backing up information or debugging it;
— Speech Logger– I haven’t fully figured it out, most likely it was logging during negotiations or recording chatter. If you check the box next to “Enable speech log”, then after the end of the phone call, the corresponding files are created in the root directory of the memory card. Their name and structure take the following form: Wed_Jun_2014__07_02_23.vm (Wednesday_July_2014__time07_02_23.vm).
What these files serve and how they can be useful to us is unclear. The /sdcard/VOIP_DebugInfo directory (which is the storage location for files with backup information) is not created automatically; if you create it manually, it will remain empty after the conversation.
— Audio logger– good software for recording sound that supports quick search, playback and saving it.
If you approach these modes wisely, you can adjust the volume of Android smartphones or tablets the way you want. When you enter any of the modes, different volume settings (Type) will become available to your view. Here is a list of the basic settings you need to know (Fig. 4):
figure 4
—Sip– settings for Internet calls;
— Mic– microphone sensitivity settings;
— Sph– settings for the earpiece speaker (the one we put on our ears);
— Sph2– settings for the second speaker (I don’t have one);
— Sid– skip, if you change these parameters during conversations on your smartphone or tablet, you can hear yourself instead of your interlocutor;
— Media– adjusting the multimedia volume level;
— Ring– adjusting the volume level of the incoming call;
— FMR– FM radio volume settings.
Next, under the settings selection item, we have access to a list of volume levels (Level) (Fig. 5). For a better understanding, there are 7 such levels, from level 0 to level 6. Each level corresponds to one “click” on the volume rocker of a smartphone or tablet. Accordingly, level 0 is the quietest level, and level 6 is the loudest signal level. Each level can be assigned its own values, which are located in the Value is 0~255 cell, and should not go beyond the range from 0 to 255 (the lower the value, the lower the sound). To do this, you need to erase the old value in the cell, then enter a new one (desired) and press the “Set” button (the one next to the cell) to assign (Fig. 6). Be careful when using the maximum values, as the speakers may produce uncharacteristic unpleasant sounds in the form of rattling and other unpleasant effects.
Figure 5 Figure 6
Warning! Before making changes, rewrite all factory values (in case something goes wrong).
You should know this!
Editing modes in the engineering menu
Example 1. How to increase the volume of an incoming call?
To do this, you need to go to the engineering menu, select the “Audio” section, go to the “LoudSpeaker Mode” and in the volume settings select “Ring” - the volume settings for the incoming call. Then sequentially change (increase) the values of all signal levels (level 0 – level 6). Also, for greater effect, you can increase the value of the Max Vol section. 0~160, if it is not the maximum (I set it to 155, with a higher value the speaker starts to “wheeze”).
Example 2. How to increase the volume when talking on the phone? (Increasing the volume level of the small speaker, the one we put to the ear).
Again we go to the engineering menu that we already know, press the “Audio” section, go to the special “Normal Mode” mode, select Sph in it - this parameter is responsible for changing the value of all signal levels in the range from level 0 to level 6. Set the desired one for us level. In the Max Vol. 0~160, can also be changed to a higher volume power value.
Example 3. Increasing the volume and sensitivity of the smartphone's conversational microphone
To adjust and set the required volume level and sensitivity of the spoken microphone, you need to go to “Engineering Menu”> “Audio”> “Normal Mode”> select Mic - microphone sensitivity settings, and for all levels (level 0 - level 6) assign one and the same value, for example 240. Now the interlocutor should hear you better.
Example 4. How can I increase the audio recording volume during video recording?
Let’s say there is a need to increase the volume level of sound recording when shooting video, then in the engineering menu for our loudspeaker (LoudSpeaker Mode), change the microphone sensitivity settings (mic), increase all values at all levels (level 0 – level 6), for example, set to 240 at every level. I remind you to press the (set) button - reboot your favorite gadget and rejoice.
By the way, do not forget to press the “Set” button after each edit of a certain parameter. This action should capture and accept your command. Otherwise, the user-specified parameters are not activated. In addition, a certain number of mobile devices require a reboot for the changes to take effect (turn off and on the device).
Good luck in your experiments, if something is not clear, write in the comments. We are waiting for your answers.
Code table for entering the engineering menu
| smartphones based on MTK processor | *#*#54298#*#* or *#*#3646633#*#* or *#*#8612#*#* |
| Samsung | *#*#197328640#*#* or *#*#4636#*#* or *#*#8255#*#* |
| HTC | *#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* |
| Huawei | *#*#2846579#*#* or *#*#14789632#*#* |
| Sony | *#*#7378423#*#* or *#*#3646633#*#* or *#*#3649547#*#* |
| Fly, Alcatel, Philips | *#*#3646633#*#* or *#9646633# |
| Prestigio | *#*#3646633#*#* or *#*#83781#*#* |
| ZTE | *#*#4636#*#* |
| Philips | *#*#3338613#*#* or *#*#13411#*#* |
| TEXET | *#*#3646633#*#* |
| Acer | *#*#2237332846633#*#* |
| Blackview | *#*#3646633#*#* or *#35789#* |
| Cube | *#*#3646633#*#* or *#*#4636#*#* |
| Cubot | *#*#3646633#*#* |
| Doogee | *#*#3646633#*#*, *#9646633# , *#35789#* or *#*#8612#*#* |
| Elephone | *#*#3646633#*#*, |
| HOMTOM | *#*#3646633#*#*, *#*#3643366#*#*, *#*#4636#*#* |
Note: the table is constantly updated
Often in Chinese (and probably not only Chinese) phones based on Android, in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and microphone; we will look at fixing them in this article.
How to get to the engineering menu of an Android phone
To get to the engineering menu, open the dialer and enter a special code: *#*#3646633#*#*
Also on some versions of Android the command may work *#15963#* and *#*#4636#*#*
If your phone's processor is not MTK, then different options are possible.
Here are the codes known to me for opening the engineering menu on different phones and tablets:
*#*#54298#*#* or *#*#3646633#*#* – smartphones based on MTK processor
*#*#8255#*#* or *#*#4636#*#* –Samsung smartphones
*#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* – HTC smartphones
*#*#7378423#*#* – Sony smartphones
*#*#3646633#*#* – smartphones TEXET, Fly, Alcatel,
*#*#3338613#*#* or *#*#13411#*#* - smartphones Fly, Alcatel, Philips
*#*#2846579#*#* or *#*#2846579159#*#* – Huawei smartphones
*#*#2237332846633#*#* - devices from Acer
Immediately after entering, the command should disappear and the engineering menu should open. But on some devices you will still need to press the “Call” key
A list of sections of the phone's engineering menu will appear.
Just in case, take a notepad and pen and take note of the settings that were set on your phone before your intervention. You never know, anything can happen.
On my phone (based on an MTK processor), in order to get to the engineering menu I had to install a free utility (program) from Google Play " Mobileuncle MTK Tools“, which opens access to the engineering menu (that is, it works similarly to dialing the magic combination *#*#3646633#*#*).
I am sure that you will also find free applications for other phones there.
Volume settings for the speaker, headset (headphones) and microphone of the phone through the engineering menu
For clarity, let’s briefly look at setting the device’s volume level:
We go into the program or dial the magic combination to enter the engineering menu. Next, in the menu that opens, select the section “ Engineer Mode»
A section will open in which you can select the engineering menu of the Android system (we skip it), and the engineering menu of the phone itself.
We need the phone’s engineering menu, so select the “Engineer Mode (MTK)” section. This point is circled in the figure with a red marker.
A very long menu will open, through which you can get to almost any phone settings. But it’s not enough to get to them, you need to know how to manage them.
Therefore, do not change what you have no idea about.
At worst, write down the parameters that were before your intervention, so that you can return them back later. Let's continue!
Since we are interested in adjusting the sound level, select the “Audio” item, I circled it with a red marker.
And... magic! The menu of interest to us for setting the parameters of the speakers and microphone opens.
Why did we actually go into this menu? Doesn't something work like that out of curiosity? Okay, let's continue to figure it out!
It’s worth stopping here and figuring out what all these menu items mean.
Normal Mode(Settings section in normal or normal mode) – this mode is active when nothing is connected to the smartphone;
Headset Mode(headset mode) – this mode is activated after connecting headphones or external speakers;
Loud Speaker Mode(speaker mode) – it is activated when nothing is connected to the phone or tablet, and you turn on the speakerphone while talking on the phone;
Headset_LoudSpeaker Mode(speaker mode with a headset connected) – this mode is activated if you connect headphones or external speakers to your phone or tablet, and you turn on the speakerphone while talking on the phone;
Speech Enhancement(phone conversation mode) – this mode is activated in the normal mode of telephone conversations, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.
Debug Info– it’s not clear why – information on backing up information or debugging it;
Speech Logger– I haven’t fully figured it out, most likely it was logging during negotiations or recording the conversation. If you check the box next to “Enable speech log”, then after the end of the phone call, the corresponding files are created in the root directory of the memory card. Their name and structure take the following form: Day of week_month_year__hour_minutes_seconds (for example, Friday_July_2016__time17_12_53.pcm).
What these files serve and how they can be useful to us is unclear. The /sdcard/VOIP_DebugInfo directory (which is the storage location for files with backup information) is not created automatically; if you create it manually, it will remain empty after the conversation.
Audio logger– used to record sound that supports quick search, playback and saving.
When you enter any of the modes, you will have access to different volume settings (Type). Here is a list of basic settings you need to know:
- Sip – settings for Internet calls;
- Mic – microphone sensitivity settings;
- Sph – earpiece speaker settings (the one we put on our ears);
- Sph2 – settings for the second speaker (I don’t have one on my phone);
- Sid – skip, if you change these parameters during conversations on your smartphone or tablet, you can hear yourself instead of your interlocutor;
- Media – adjust the multimedia volume level;
- Ring – adjust the volume level of the incoming call;
- FMR – FM radio volume settings.
Under the settings selection item, a list of volume levels (Level) is available (see figure). 
There are usually 7 such levels, from level 0 to level 6. Each such level corresponds to one “click” on the volume rocker of your smartphone or tablet.
Thus, level 0 is the quietest level, and level 6 is the loudest signal level. Please note that each level can be assigned its own values, which are located in the Value is 0~255 cell. They should not go beyond the range from 0 to 255 (the lower the value, the quieter the volume).
To change this parameter, you need to erase the old value in the cell and write a new one, and then press the “Set” button (the one next to the cell) to assign. 
Finally, at the bottom you can see the Max Vol section. 0~255 (on my smartphone, for example Max Vol. 0~255, it all depends on the manufacturer). This item sets the maximum volume level; it is the same for all levels.
Dear friends. The names of the items may differ on different models. This is an MTK platform, so be prepared to rack your brain and look for a match in your menu. I have a Jiayu G3 phone.
For me the changes were applied immediately, but someone may need to restart the phone for them to take effect.
Although, it seems like you shouldn’t break anything, and if you don’t like the changes, you can always enter the old value..
But still..
YOU MAKE ALL CHANGES AT YOUR OWN RISK!!! Don't forget to turn on your thinking!
P.S.: I found a font size setting on my phone. It turns out you can increase it MORE!
P.P.S.: if something is still not clear, here is a video on setting up sound in the engineering menu:
Manufacturers of Android smartphones implement and use the engineering menu to test devices. It contains all kinds of tests and device settings that are not available to ordinary users. However, today, knowing the USSD command or downloading the application from PlayMarket, anyone can go to the engineering menu.
Why do you need a hidden engineering menu in Android?
Engineering Mode is essentially a hidden application that developers use for testing and installation. optimal parameters mobile phone or tablet. Specialists check the operation of the sensors and, if necessary, make adjustments to the functioning of system components.
When working with the Android technical menu, be careful - changing some functions leads to malfunctions of the device.
How to enter the menu
To open the menu installed by the manufacturer, activate the dial pad on your smartphone and enter one of the USSD commands presented in the table. After entering the command, the numbers will disappear from the screen, and a menu will open instead.
In the dial pad, enter a combination of numbers and symbols to enter the menu
Table: combinations for launching Engineering Mode
| Device manufacturer | Team |
| Sony | *#*#7378423#*#* |
| *#*#3646633#*#* | |
| *#*#3649547#*#* | |
| Philips | *#*#3338613#*#* |
| *#*#13411#*#* | |
| ZTE, Motorola | *#*#4636#*#* |
| HTC | *#*#3424#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Samsung | *#*#197328640#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Prestigio | *#*#3646633#*#* |
| LG | 3845#*855# |
| Huawei | *#*#2846579#*#* |
| *#*#14789632#*#* | |
| Alcatel, Fly, Texet | *#*#3646633#*#* |
| Smartphones and tablets with a MediaTek processor (most Chinese devices) | *#*#54298#*#* |
| *#*#3646633#*#* | |
| Acer | *#*#2237332846633#*#* |
Video: how to work in Engineer Mode
If the code does not work and you cannot launch the service menu using the standard method, use third-party applications - you can download them on PlayMarket. Recommended programs - “Launch the MTK engineering menu”, Mobileuncle Tools, Shortcut Master.
The manufacturer menu does not work on some device models with Android 4.2 JellyBean (x.x.1, x.x.2), as well as on Android 5.1 Lollipop. The menu is also invalid when the Cyanogen Mod firmware is installed. In Android 4.4.2, when you reboot, changes made in the application are reset.
“Launch the MTK engineering menu”
The application allows you to open and configure the engineering menu without typing digital commands. Works correctly on MediaTek processors (MT6577, MT6589, etc.) and Android systems 2.x, 3.x, 4.x, 5.x. According to user reviews, the program successfully performs its functions, but after rebooting the smartphone, the settings made using the application are reset.
Mobileuncle Tools program
The functionality of the application is similar to the previous one, but, in addition to accessing the engineering menu, the user has the opportunity to view information about the screen, sensor and device memory, as well as update the firmware, restore the IMEI number and improve GPS. For stable operation, root rights are required.
To enter the engineering menu, select Engineer Mode
Shortcut Master utility
The Shortcut Master program is designed to work with shortcuts and system applications: creating, searching, deleting. It does not have a direct function for entering the engineering menu. But with its help you can view the list of secret commands operating on your device. And by clicking on the name of the command, you will see a drop-down menu in which there will be an item “execute”. Convenient and does not require unnecessary actions.
In the program, call up the additional menu and select Secret code explorer to see a list of codes
Root rights to access the engineering menu
To get to the service menu on some versions of Android, the user must have superuser rights (root). You can obtain rights using specialized applications: Farmaroot, UniversalAndRoot, Romaster SU and others. To get Root access to your device using Farmaroot:
- Install and run the program. Link in Google Play: https://play.google.com/store/apps/details?id=com.farmaapps.filemanager&hl=ru.
- If the application supports installing root rights on your device, then on the screen you will see a list of possible actions, among them - “Get root”. Select this item.
- Choose one of the preset root methods.
- The program will begin installation.
- At the end of the procedure, you will see a message about the successful installation of root access.
Instructions for obtaining root access through the Farmaroot application
Possible problems and solutions:
- the application closed mid-installation - restart the device and try again;
- root rights are not installed - try installing using a different method (select a new exploit in the application).
What can be configured in the menu
The appearance of the engineering mode and the ability to adjust parameters may vary depending on the tablet or smartphone model. In the menu, users most often adjust the sound, change camera settings and use recovery mode. The parameters for adjustment and the procedure are given below. Be careful - the names of menu items may differ in different device models! You act at your own risk.
Audio: Increase volume level
If your phone does not ring loudly enough, find the Audio section in the engineering menu and go to LoudSpeaker Mode. Select Ring. For each signal level (level 1–6), change the values - set the numbers in ascending order, from 120 to 200. Increase the value in the Max item. Vol - maximum 200. Press the SET button to save the settings.
Sequentially change the maximum volume values for each level
Audio: Increase phone call volume
To enhance the speaker tone for conversations, in the Audio service menu section, select Normal mode and open the Sph item. Set the values for signal levels (level 1–6) from 100 to 150, and the number for Max. Vol. – up to 160.
By adjusting the speaker volume, you will be able to hear your interlocutor better during a call.
To increase the sensitivity of the microphone, go to the menu Audio - Normal mode - Mic. For each level, assign the same microphone sensitivity values, for example, 200. Press the SET button, reboot and check whether the other party can hear you better.
Increased microphone sensitivity will allow the other person to hear you better
Video: adjusting sound parameters in the engineering menu
Battery: Disable unused frequencies
Smartphones quickly drain battery life running applications, maintaining cellular communications, and network connections. Using the engineering menu you can increase the battery life.
Modern devices scan several GSM frequencies - 900/1800 MHz and 850/1900 MHz. In Russia there is a 900/1800 MHz pair, which means there is no need to scan the network at other frequencies. The radio signal for the second pair can be turned off, which will significantly save the charge level.
In Engineer Mode, open Band Mode. Disable unused frequencies by unchecking the corresponding items - PCS1900 and GSM850. If the device supports two SIM cards, open the SIM1 and SIM2 items one by one and perform the indicated steps in each. Press the SET button to save the settings.
Disabled frequencies save battery power
If your smartphone and SIM card operate in 3G networks, disable the networks that are not used in Russia: WCDMA-PCS 1900, WCDMA-800, WCDMA-CLR-850. Press the SET button again.
You can enable scanning of disabled networks by returning to the same menu and checking the boxes.
Camera: photo and video settings
By default, Android devices save pictures in JPEG format. Meanwhile, photographers prefer to shoot and process material in RAW to gain more editing options. The technical menu allows you to select the desired image format.
Find Camera in the menu and select Capture Type. Set the photo format to RAW and press SET. Also in the Camera menu you can increase the size of pictures, set the ISO value, enable shooting in HDR for higher photo detail, and set the frame rate for videos. After changing each parameter, remember to press SET to save the settings.
Recovery Mode
Recovery Mode is an analogue of Bios on a computer, allows you to control the device without logging into the Android system. Recovery mode features:
- resetting settings to standard;
- firmware update;
- access to root rights;
- creating a backup copy of the OS;
- removal of personal data from the system.
In Recovery Mode, do not perform an action if you are not sure what it will lead to. Some commands may harm the device and system.
If the settings are not saved
Users who have access to the technical menu complain that the parameters changed in it are not activated or are reset when the device is restarted.
To activate the settings after changing the parameters, tap on the SET button at the bottom of the screen. If the parameters are reset after rebooting the device, try accessing the technical menu not through the application, but using a digital command.
After setting the settings, do not forget to press the SET button
Service codes for Android devices
In addition to the technical menu, secret USSD codes - combinations of numbers and symbols, which the user types by typing to perform an action, allow you to control the functionality of Android smartphones. Secret codes for different devices are given in the table.
Table: list of secret commands for Android
| Manufacturer | Digital Team | Meaning |
| Codes for most manufacturers | *#*#7780#*#* | Rolling back settings and uninstalling user applications |
| *2767*3855# | Firmware change, total settings rollback. | |
| *#*#232339#*#* *#*#526#*#* |
Checking wireless connections | |
| *#*#34971539#*#* | Camera details | |
| *#*#232338#*#* | View Wi-fi address | |
| *#*#273283*255*663282*#*#* | Activating media backup on your phone | |
| *#*#1472365#*#* | Express GPS test | |
| *#*#0*#*#* | Checking the screen | |
| *#*#2663#*#* | Viewing touchscreen information | |
| *#*#2664#*#* | Touchscreen testing | |
| *#*#4636#*#* | General device and battery data | |
| *#*#0673#*#* *#*#0289#*#* |
Audio tests | |
| *#*#7262626#*#* | Checking GSM reception | |
| *#*#0842#*#* | Vibration and display brightness test | |
| *#*#3264#*#* | RAM information | |
| *#*#232331#*#* | Testing Bluetooth Communications | |
| *#*#8255#*#* | Checking Google Talk | |
| *#*#232337#*#* | Bluetooth address information | |
| *#*#1234#*#* | Device firmware data | |
| *#*#44336#*#* | Device build date | |
| *#06# | IMEI number information | |
| *#*#197328640#*#* | Service activity test | |
| *#*#1111#*#* | Free-to-air version of programs | |
| *#*#2222#*#* | Iron number for free-to-air | |
| *#*#0588#*#* | Checking the proximity sensor | |
| Sony (devices use the same commands) | **05***# | Unblocking a PUK code |
| Motorola | *#06# | IMEI |
| *#*#786#*#* | Reverting settings to original | |
| *#*#1234#*#* *#*#7873778#*#* | Opening applications with root rights | |
| *#*#2432546#*#* | Checking for updates | |
| *#*#2486#*#* | Entering the service menu | |
| HTC | *#*#4636#*#* | Service menu |
| 3282# | EPST System Application | |
| *#*#8255#*#* | G-talk monitor | |
| 33284# | Network status | |
| *#*#3424#*#* | Functionality test | |
| 3424# | Device diagnostics | |
| 7738# | Protocol diagnostics | |
| 8626337# | Voice Coder | |
| Samsung (generic codes are effective) | 778 (+call) | Activation of EPST menu |
| LG (working with codes is replaced by the technical menu) | 3845#*855# | International devices |
| 3845#*400# | Chinese devices | |
| 5689#*990# | Sprint | |
| 228378 (+ call) | Verizon Wireless | |
| 3845#*851# | T-Mobile | |
| 3845#*850# | AT&T |
If for some reason the service code did not work, do not worry - install and run the Secret Codes application (Link on Google Play: https://play.google.com/store/apps/details?id=fr.simon.marquis. secretcodes&hl=ru). The program will analyze the combinations active in the device and offer you a list. You can activate the combination directly in the application with one click on the name.
There are many ways to improve your Android mobile device using the engineering menu. The menu structure differs in different device models, but the basic functionality is preserved everywhere. When opening and changing parameters in the service section, be careful - some commands lead to system failures and damage to the device.
The engineering menu on Android devices is a special “built-in” application into the operating system that allows you to fine-tune the device. This is necessary to debug the operation of the hardware and, of course, the software. But often users want to change some settings at their own discretion. In this case, the question arises of how to enter the Android engineering menu. This can be done using special service codes or third-party software.
Developer menu: what are the options?
Settings and menu design on Android devices may vary depending on the phone manufacturer. In general, users resort to using the engineering menu for the following reasons:
- Setting up audio on the phone (ringer volume, voice of the interlocutor during a conversation);
- Changing camera settings;
- Using recovery mode;
- Setting microphone sensitivity;
- Disabling unused frequencies to save phone battery;
- Obtaining information about the device's MAC address;
- Setting up Bluetooth and Wi-Fi.
The Android engineering menu provides the user with virtually limitless possibilities. But you should always remember that only advanced users can use it. Changing some settings may cause your smartphone or tablet to not work correctly. If you don't know what each menu item directly does, simply leave it alone.
The developer mode includes setting up Hardware Testing equipment and also contains the following items:
- Audio – adjusts the volume in the phone speakers.
- Camera – allows you to configure various camera parameters (image size, type, etc.).
- Diving current camera shows the current of the camera.
- CPU Stress Test performs a test load on the central processor.
- De-sense is a device manager that manages configuration parameters.
- Display – setting the frequency of the outgoing signal.
- IO – setting up input/output operations.
- Memory – key information about memory.
- Power – information about the battery.
- SD Card Test - testing a memory card.
- TouchScreen – setting up the touch screen, checking sensitivity.
- USB - testing the operation of the USB port on your phone.
In the Connectivity tab you can get information about devices that work with the outside world. These include Bluetooth, Wi-Fi and FM module. The Log and Debugging tab allows you to view the battery log, set the debugger level and run a special MTK log. In the Others tab, you can change fonts, as well as view the temperature of the processor and battery.
Entering the menu: using code combinations
To enter the engineering menu as quickly and easily as possible, you will need special engineering codes. Each manufacturer has its own combination, which opens access to the engineering menu in Android.
To enter the menu you need to:
In most cases, this technique allows you to open the service menu. Below are some combinations for the most popular phones:
- Models from HTC - *#*#3424#*#*, *#*#4636#*#* or *#*#8255#*#*;
- Samsung devices - *#*#197328640#*#* or *#*#8255#*#*;
- Sony smartphones - *#*#3646633#*#*, *#*#7378423#*#* or *#*#3649547#*#*;
- Huawei phones - *#*#2846579#*#* or *#*#14789632#*#*;
- Mobile from ZTE - *#*#4636#*#*.
There is also a universal code that is suitable for most smartphones and tablets running on an MTK processor. You can look in the specifications of your device to see what processor you have installed. If this is a MediaTek (MTK) product, then try using the combination *#*#54298#*#* or *#*#3646633#*#*.
If it works, you will see the developer menu in front of you. Some engineering codes for Android do not work in operating versions 4.2.1 and 4.2.2.
Using Third Party Applications
How to enter the engineering menu on Android if the Android codes do not work? There is a way. To enter the engineering menu, you will need one of the applications that will allow you to enter developer mode without entering a combination. There are several similar programs in the official Google Play store. One of them is “Launch the MTK engineering menu”.
To use it, you need:
- Go to the Play Market and enter the name of the program in the search bar.
- Download and install it.
- Launch on your phone.
After that, you will see a couple of tabs with different settings.
The application allows you to perform various tests (for example, a processor stress test), obtain information about the modem or memory, and much more. You can also make changes to the hardware. To do this, you just need to open the appropriate sections and configure the settings. In this case, the phone will be on all the time.
An alternative option is the Mobileuncle tools program. You can download it on the Internet. Install the application, and then go to the “Engineer Mode” submenu. Almost all developer menu items will be available in it.
Now you know how to enable Android developer mode. It will help you quickly make the necessary settings or monitor individual components of your smartphone.
Smartphones and tablets running Android have many interesting features hidden from prying eyes.
Why are they hidden? Firstly, to inexperienced user I didn’t break anything, and secondly, they are needed in very rare cases and are not used regularly. Today we will talk about the engineering menu.
What is it and why is it needed?
We are talking about a special program that developers use at the final stage of configuring the software platform of a mobile device. With its help, they make final changes to the operation of the device, check the functioning of various sensors and test system components. Hidden functionality is also used to obtain a large amount of system information and conduct various tests (about 25 pieces).
Attention! This section is intended for experienced users who take full responsibility for the consequences.
The engineering menu is available on smartphones and tablets running on a MediaTek processor. On the Qualcomm chipset it is either reduced or absent altogether.
How to open the engineering menu?
To enter the engineering menu, you need to enter a special command in the dialing application: *#*#3646633#*#*. On some versions the code *#*#4636#*#* or *#15963#* may work.
If the code did not work or you do not have a dialing application (relevant for tablets that do not support calls), the MobileUncle Tools or MTK Engineering applications, which can be downloaded for free via Google Play, will help.
Advanced users of modern smartphones and tablets use the numerous functions that the Android engineering menu has. It allows you to obtain information about the mac address, check or configure the operation of Wi-Fi, Bluetooth, update the software of the camera, speakers. Very often, using such a menu you can improve the sound on your device and make other fine adjustments. For example, return the original Google account settings, specify settings for blocking and turning off the device, and set settings that allow you to create a backup copy of important information. Before entering the engineering menu, you need to understand that rash actions can lead to a malfunction of the device. It is advisable for the user to remember what changes were made to the system in order to return all settings to their previous state if necessary.
How to enter the engineering menu using the standard capabilities of the device?
List functionality can be opened by typing a certain combination of characters in the device's call window. The Android engineering menu code varies depending on the brand of phone or tablet. Each manufacturer sets its own combination. Such information is usually indicated in the instructions for the phone and on official websites. Users of modern devices usually have no difficulty finding the required code.
Below we provide a table of the most common combinations. It is not recommended to use them unless your device is one of the listed brands.
The developers do not recommend executing such commands without certain knowledge and experience. But often only this method helps to quickly solve a number of problems related to returning the device to its original state, receiving additional information about the device. The engineering menu is presented in English, which makes it understandable for most users.
Using additional programs
It is not always possible to find out the combination that is suitable directly for your device. In such situations, you can install a special software, which will allow you to open a list of the functionality of your smartphone or tablet with just a few clicks. It is publicly available for different versions of Android and device models.
The program for entering the Android engineering menu can be installed via a USB connection to a personal computer or laptop. One of them is called Mediatek Engineer Mode. It is a file EnMode.apk, which must be transferred to the device memory and installed in the usual way. This program is suitable for devices operating on the MTK processor. The user has the opportunity to download free and paid versions of the software. 
In the Google Play store you can download the Mobileuncle MTK Tools utility. It is designed for smartphones and tablets running Android 2.1. and later versions. The description says that such a utility is also only suitable for devices equipped with an MTK processor.
The Mobileuncle Tools program is suitable for owners. There are other utilities, for example, Shortcut Master, MTK engineering menu, launching MTK engineering menu. Before installing them, we recommend that you read the application rating, reviews from other users, and also check your device for compatibility.
Setting up optimal sound by opening the engineering menu
One of the most common reasons The reason why users are looking for information on how to enter the engineering menu is the need to fine-tune the sound. The following situations may occur:
- Poor audibility when the speakerphone is on
- Sudden changes in the sound of an incoming call while listening to audio
- Insufficient signal volume
- Quiet sounds while recording video
- Quiet operation of the headset and microphone.
This is just a small list of installed settings that can be changed through the engineering menu of a modern mobile device. Sound settings are done through the Audio section, which is displayed immediately after entering the menu. Then the screen will appear various tabs, for example, Headset Mode. This tab allows you to set sound parameters that are activated when you connect a headset. Normal Mode sets the sound in the normal state of the mobile device (without connecting headphones or speakers).
LoudSpeaker Mode tab, which are activated when the loudspeaker is turned on. Headset LoudSpeaker Mode allows you to make settings for the active loudspeaker mode while a headset is connected to it. The Speech Enhancement tab provides settings that come into play when communicating over a mobile network.
In any of the modes, you can fine-tune the microphone or increase the volume (see table).
The volume of any sound parameter has seven levels - from 0 to 6. The higher the value, the louder your device will sound. We do not recommend setting the maximum settings, as this promotes faster performance. In many devices, setting the volume to maximum can result in unpleasant noise.
The engineering menu is a mechanism fine tuning mobile devices operating on Android platform
Often in Chinese (and probably not only Chinese) phones Android based in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and...
Not many people know about the existence of a menu in the Android OS with advanced device settings - engineering menu
. And someone knows, but doesn’t know how to enter it and what to do with it.
In this article we will show how to enter the engineering menu and some of its capabilities.
You can enter the engineering menu simply by entering a special command (but we must add that this method does not work on all versions of Android and not on all devices)
Command to enter the engineering menu: *#*#3646633#*#*
Also on some versions of Android the command may work *#15963#* And*#*#4636#*#*
Immediately after entering, the command should disappear and the engineering menu should open. But on some devices you will still need to press the "Call" key
If this method does not have any effect, you can use an alternative!
And it consists of installing the program (which, by the way, is freely available on Google Play) " Mobileuncle MTK Tools 2.4.0"
This program will open access to the engineering menu (that is, it will work similarly to dialing a combination*#*#3646633#*#*)
There are a lot of settings there! There is huge scope for experimentation! Almost EVERYTHING can be debugged and adjusted!
For clarity, let’s briefly look at setting the device’s volume level:
Go to the program ---> select the "Engineer Mode" section
Because We are interested in adjusting the sound level, select ---> "Audio"
And voila, the menu we are interested in opens.
Max Vol - the same for the entire subsection, as a rule, it is set to 150 (you can change 0-160 - it changes if you select the Media item in the subsection).
If in some submenu, for example, Audio - Normal - Sph, the general level is not available for regulation, then enter another subsection, for example, Audio - Normal - Media - there you will be able to adjust the general volume level.
Sub-items:
Sph - volume levels during a telephone conversation,
Mic - microphone sensitivity levels,
Ring - ringer volume,
Media - volume when playing music, movies, and games.
Ring volume levels are set in Audio - LoudSpeaker - Ring
Max Vol = 150
Levels: 120 130 145 160 180 200 (starts to wheeze more)
Phone speaker conversation volume levels in Audio - Normal - Sph
Max Vol = 150
Levels: 100 120 130 135 140 145 150
Microphone conversation volume levels in Audio - Normal - Mic
Levels: 100 172 172 172 172 172 172
Media volume levels are set in Audio - LoudSpeaker - Media
Levels: 110 130 160 190 210 230 250
All the same can be configured for the Headphone mode, by analogy:
Speakerphone volume levels are set in Audio - LoudSpeaker - Sph
Max Vol = 150 (it is the same for the entire section)
Levels: 80 100 110 120 130 140 150 (more wheezing starts)
Now all volumes are adjusted within adequate ranges.
If you are not satisfied with the volume levels, you can set your own values (the higher the value, the greater the volume when adjusting with the volume keys, or the greater the sensitivity of the microphone)
By analogy, you can configure most sections! Experiment!
Often in Chinese (and probably not only Chinese) phones based on Android, in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and microphone; we will look at fixing them in this article.
How to get to the engineering menu of an Android phone
To get to the engineering menu, open the dialer and enter a special code: *#*#3646633#*#*
Also on some versions of Android the command may work *#15963#* and *#*#4636#*#*
If your phone's processor is not MTK, then different options are possible.
Here are the codes known to me for opening the engineering menu on different phones and tablets:
*#*#54298#*#* or *#*#3646633#*#* – smartphones based on MTK processor
*#*#8255#*#* or *#*#4636#*#* –Samsung smartphones
*#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* – HTC smartphones
*#*#7378423#*#* – Sony smartphones
*#*#3646633#*#* – smartphones TEXET, Fly, Alcatel,
*#*#3338613#*#* or *#*#13411#*#* — smartphones Fly, Alcatel, Philips
*#*#2846579#*#* or *#*#2846579159#*#* – Huawei smartphones
*#*#2237332846633#*#* - devices from Acer
Immediately after entering, the command should disappear and the engineering menu should open. But on some devices you will still need to press the “Call” key
A list of sections of the phone's engineering menu will appear.
Just in case, take a notepad and pen and take note of the settings that were set on your phone before your intervention. You never know, anything can happen.
On my phone (based on an MTK processor), in order to get to the engineering menu I had to install a free utility (program) from Google Play " Mobileuncle MTK Tools“, which opens access to the engineering menu (that is, it works similarly to dialing the magic combination *#*#3646633#*#*).
I'm sure you'll find it there too free apps and for other phones.
Volume settings for the speaker, headset (headphones) and microphone of the phone through the engineering menu
For clarity, let’s briefly look at setting the device’s volume level:
We go into the program or dial the magic combination to enter the engineering menu. Next, in the menu that opens, select the section “ Engineer Mode»
A section will open in which you can select the engineering menu of the Android system (we skip it), and the engineering menu of the phone itself.
We need the phone’s engineering menu, so select the “Engineer Mode (MTK)” section. This point is circled in the figure with a red marker.
A very long menu will open, through which you can get to almost any phone settings. But it’s not enough to get to them, you need to know how to manage them.
Therefore, do not change what you have no idea about.
At worst, write down the parameters that were before your intervention, so that you can return them back later. Let's continue!
Since we are interested in adjusting the sound level, select the “Audio” item, I circled it with a red marker.
And... magic! The menu of interest to us for setting the parameters of the speakers and microphone opens.
Why did we actually go into this menu? Doesn't something work like that out of curiosity? Okay, let's continue to figure it out!
It’s worth stopping here and figuring out what all these menu items mean.
Normal Mode(Settings section in normal or normal mode) – this mode is active when nothing is connected to the smartphone;
Headset Mode(headset mode) – this mode is activated after connecting headphones or external speakers;
Loud Speaker Mode(speaker mode) – it is activated when nothing is connected to the phone or tablet, and you turn on the speakerphone while talking on the phone;
Headset_LoudSpeaker Mode(speaker mode with a headset connected) – this mode is activated if you connect headphones or external speakers to your phone or tablet, and you turn on the speakerphone while talking on the phone;
Speech Enhancement(phone conversation mode) – this mode is activated in the normal mode of telephone conversations, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.
Debug Info– it’s not clear why – information on backing up information or debugging it;
Speech Logger– I haven’t fully figured it out, most likely it was logging during negotiations or recording the conversation. If you check the box next to “Enable speech log”, then after the end of the phone call, the corresponding files are created in the root directory of the memory card. Their name and structure take the following form: Day of week_month_year__hour_minutes_seconds (for example, Friday_July_2016__time17_12_53.pcm).
What these files serve and how they can be useful to us is unclear. The /sdcard/VOIP_DebugInfo directory (which is the storage location for files with backup information) is not created automatically; if you create it manually, it will remain empty after the conversation.
Audio logger– used to record sound that supports quick search, playback and saving. 
When you enter any of the modes, you will have access to different volume settings (Type). Here is a list of basic settings you need to know:
- Sip – settings for Internet calls;
- Mic – microphone sensitivity settings;
- Sph – earpiece speaker settings (the one we put on our ears);
- Sph2 – settings for the second speaker (I don’t have one on my phone);
- Sid – skip, if you change these parameters during conversations on your smartphone or tablet, you can hear yourself instead of your interlocutor;
- Media – adjust the multimedia volume level;
- Ring – adjust the volume level of the incoming call;
- FMR – FM radio volume settings.
Under the settings selection item, a list of volume levels (Level) is available (see figure). 
There are usually 7 such levels, from level 0 to level 6. Each such level corresponds to one “click” on the volume rocker of your smartphone or tablet.
Thus, level 0 is the quietest level, and level 6 is the loudest signal level. Please note that each level can be assigned its own values, which are located in the Value is 0~255 cell. They should not go beyond the range from 0 to 255 (the lower the value, the quieter the volume).
To change this parameter, you need to erase the old value in the cell and write a new one, and then press the “Set” button (the one next to the cell) to assign. 
Finally, at the bottom you can see the Max Vol section. 0~255 (on my smartphone, for example Max Vol. 0~255, it all depends on the manufacturer). This item sets the maximum volume level; it is the same for all levels.
Dear friends. The names of the items may differ on different models. This is an MTK platform, so be prepared to rack your brain and look for a match in your menu. I have a Jiayu G3 phone.
For me the changes were applied immediately, but someone may need to restart the phone for them to take effect.
Although, it seems like you shouldn’t break anything, and if you don’t like the changes, you can always enter the old value..
But still..
YOU MAKE ALL CHANGES AT YOUR OWN RISK!!! Don't forget to turn on your thinking!
P.S.: I found a font size setting on my phone. It turns out you can increase it MORE!
P.P.S.: if something is still not clear, here is a video on setting up sound in the engineering menu:
Every cell phone designed for its volume limit. By and large, high phone volume is only needed so that your device can be heard always and everywhere. Nowadays, only schoolchildren listen to music through the main speaker in order to demonstrate the superiority of their phone over the phones of their peers.
Our specialists can easily increase the volume limit of almost any smartphone. If you have any questions, feel free to contact us! You can contact us by mail or call one of the numbers: ,
Sometimes there is a need to increase the volume of the phone - in some models, for example, the call is barely audible on the street. There is a lot of material on the Internet on how to increase the volume of Android. Summarizing all the information, we can draw the following conclusions and answer this question:
- You can increase the speaker volume programmatically. For operating system Android has created many programs with the help of which the problem of increasing the volume becomes completely solvable. For example, in one of the IncreasingRing programs it looks like this:
- You can also increase the volume of your Android smartphone throughengineering menu.To call it, you need to type a special command in the call menu. Different versions of Android operating systems require their own call combination.
Here is a list of all combinations for calling the engineering menu on Android:
- *#*#3646633#*#*
- *#15963#*
- *#*#4636#*#*
By typing one of these combinations, we get access to the engineering menu, which, as a rule, is also in Russian on Russified versions of Android.
As for the iOS operating system, you can also increase the volume of your iPhone quite simply:
- Enlarge using the device buttons or using touch screen- the method is primitive, but sometimes iPhone users forget about this.
- Also, the iPhone volume is increased from the phone menu. To do this, we need to go to the Settings menu and select the Sounds sub-item. Using the touch screen you need to move the value to the right.
- If you are unhappy with all the basic standard methods and the volume of the iPhone speaker still seems low to you, then you can resort to increasing the volume by changing the system settings, however, you must be extremely careful not to affect the settings that are significant for the system and thereby not disrupt the operation of your smartphone. Go to the system folder, then follow the following path:
/System/Library/Frameworks/Celestial.framework. Inside this folder is a file called SystemSoundMaximumVolume, which contains the volume settings for the entire iPhone system. In it, the default volume parameter is set to 0.7. You need to change the value to 0.99 and reboot the phone. If everything is done correctly, you will get the desired result.
Video about increasing volume through the engineering menu
If the above procedure seems complicated and impossible to you, come to us at SmartKit, we will be happy to help.
