Let's look at the tablet again. We will need this menu whenever there is a need to reflash the device or upgrade Android, for example, to increase functionality.
What is Recovery tablet menu all about?
Recovery (recovery) is also called a special Recovery Mode, which they get into when loading the gadget in a special way. In this menu it is possible to restore the system or apply updates and improvements. Often, recovery is necessary when system failures occur or smooth operation is disturbed, etc. Also, it is often possible to enter Recovery Mode, even when it fails to boot to a normal state.The main functionality Recovery menu:
- Restore previously saved state operating system;
- Deletion of personal data stored in the system;
- ;
- ;
- Install updates;
It must be borne in mind that incorrect actions in the Engineering menu can lead to disastrous consequences for the system. It is recommended that before any manipulations in Recovery recover data from the device in a safe place in advance.
The service menu of each tablet is individual, therefore, before changing anything in it, we strongly recommend that you carefully read the instructions.
Login to Recovery on a tablet with android
IN different devices Excellent versions of the Recovery can be installed, which, as a rule, differ even visually. At the same time, a similar sequence of user actions is most often used to get into this menu. So, to activate the Engineering Mode, you will need:1. Turn off the tablet. It is recommended that you fully charge the battery in advance or connect the device to the network.
2. Go to Recovery by performing manipulations with the buttons located on the gadget's body. Typically, each manufacturer uses its own special combination of "hot buttons". Consider the most common combinations established by manufacturers to enter Recover.
Keyboard shortcuts for entering Tablet recovery:
- Simultaneous clamping of one of the volume buttons, Home and the power button.
- Simultaneous clamping of one of the volume buttons, power button.
- Simultaneous clamping of the power button and 2 volume buttons.
The buttons are held until loading into recovery mode.
Recovery of Chinese tablets
In a number of Chinese-made devices, there is no pre-installed Recovery. In this case, you will need to first reflash the tablet.Management in the Recovery menu
Most often, moving around points and selecting them in Recover are implemented using physical volume buttons and a power button. Other devices may have keys that are used for navigation and selection.Some Recovery uses a touch control method. In this case, the menu items are selected with a simple tap.
How to get into Recovery on tablets where volume buttons are not provided?
To enter the Engineering Menu on devices without volume buttons, you can try the following options:1. To get to the target mode, you must simultaneously press and hold the power + Home keys. The second way: While holding the "Home" button, you need to hold down the power key, and then release the "Home". When the screen saver appears, you must click "Home" again.
2. To switch between menu items, you can use the sensor or the keyboard connected to the USB port via OTG cable.
Everyone knows what an advanced user can do with an operating room. windows system wonders. But not everyone suspects that Android can offer advanced features. An experienced professional can call engineering menu, in which the advanced configuration of the device is carried out, as well as testing its specific functions. How to enter the engineering menu on Android - read below.
In modern versions of the operating system there is a fairly full section " Settings". With it, you can adjust a variety of parameters. But some of them still do not lend themselves to deep tuning. Such parameters should be sought precisely in the engineering menu. For example, specialists from a service center can enter the engineering menu in order to adjust the volume of the speaker, headphones and built-in microphone.
In a word, the engineering menu contains system settings that should not be available ordinary user. The Android engineering menu can easily ruin a smartphone if you change its settings almost at random. With it, you can often even change the font size, increase the number of icons on the desktop, and make other changes to the system. On some smartphones, the signal strength, type of vibration, and other aspects of the device’s operation change in the engineering menu in the engineering menu.
Interestingly, the easiest way to get into the engineering menu is on Android 4.4 and later versions of this OS. The hardest thing is to get into such a menu on Android 2.2. Most often, the early versions of the OSes were not equipped with an engineering menu at all - that is why they practically did not lend themselves to customization. There are problems with this on the newest devices.
Quick and easy way
It should be noted that to open the engineering menu does not need any third-party program. No root access required! You just need to type a special combination on the virtual keyboard - the so-called engineering menu code. The problem is that many manufacturers use their own code; there is no universal combination. Sometimes the code is even different for different models released by the same company!
To get started, you should find in the section where dialing the phone number.
If the engineering menu does not appear, then after entering the combination, try pressing the call key.
By the way, owners of devices based on the MediaTek MT6573, MT6577, MT6589 and some other devices can download the application Launch MTK Engineering Menu . As you might guess, the utility allows you to launch the corresponding menu without entering a numerical code.
If you can’t enter the menu
It is possible that you will try to enter all the above combinations, but you won’t get into the engineering menu. This happens on Android 6 and some others are enough latest versions OSes. Apparently, the engineering menu is blocked, or some specific code is required to call it.
Android engineering menu and secret codes. What allows Android OS to be configured through the engineering menu? Sound volume, sensors and much more, read about all this in our article.
Our smartphones carry a lot of secrets that are hidden by manufacturers. Do you know anything about the engineering menu on Android? Have you heard about secret codes? Once opened our article, it means something remotely, but heard. All these tools appeared even at the birth of the first mobile phones, but, naturally, over the years they became more functional and understandable. However, it is worth noting immediately that the plans of manufacturers do not include making the engineering menu or secret codes for (as the name implies) accessible to everyone. And that makes sense. Let's go in order.
So, Engineering Mode (engineering menu) is a special application that is installed on almost any smartphone. Used by the manufacturer to conduct various tests and optimize the functions, sensors and other parameters of the phone or tablet. By default, it is hidden in the system so that every user cannot access it. It is called, as a rule, by means of a small code entered using a standard dialer. Due to its wide capabilities, access to the engineering menu, as well as its management can be done using third-party applications.
Why is the engineering menu hidden? Using the application features inadvertently can damage your smartphone or other device. As noted above, the engineering menu is intended for manufacturers (developers, for testing). Therefore, you should be careful when making any changes here.
Secret codes for Android (service, engineering) are somewhat different from the menu examined. If the engineering menu opens access to many parameters at once, then one entered service code leads to only one, as a rule, function. There are a lot of codes. And there are both universal ones (work on most Android smartphones, even mobile phone), and codes for specific models devices. A little later, we will analyze the most popular.
How to access the engineering menu on an Android device - codes
Android engineering menu - the most popular code
There are two popular ways: using a secret code or using special software. Naturally, the first method is simpler and more reliable, but not without nuances. There is no universal code that will definitely take you to the engineering menu. On one smartphone, one works on the other - on the other, on the third - the third. However, Android is not the first year, because users have displayed the most popular codes that work on most devices. So:
- * # * # 3646633 # * # * - the most common code for entering the Android engineering menu;
- * # 15963 # * and * # * # 4636 # * # * - if the previous one did not work, try these;
- * # * # 7378423 # * # * or * # * # 3646633 # * # * or * # * # 3649547 # * # * - used on smartphones from Sony;
- * # * # 3424 # * # * or * # * # 8255 # * # * - pay attention to the owners of HTC devices;
- * # * # 197328640 # * # * - in some cases it works on Samsung;
- 3845 # * 855 # - often used to access the engineering menu on LG Android smartphones;
- * # * # 54298 # * # * - works on many devices with a MediaTek processor;
- * # * # 2846579 # * # * or * # * # 14789632 # * # * - and Huawei has its own set of codes.
At least one, but it should work on your device. Simply enter the code using the dialer (the “Phone” application on the desktop). As a rule, even the call button does not need to be pressed (not always) - at the end of dialing, the service will automatically start. But not everything is so simple, there are certain difficulties in launching the engineering menu on some Android phones.
I can’t get into the Android engineering menu: reasons
- firstly, on many smartphones or tablets with Qualcomm Snapdragon, Intel or Tegra processors, either there is no menu or it is very difficult to get access to it. In some cases, you can not even try.
- secondly, custom firmware may be the cause of the problems. In some of them, access to configuration tools is simply absent or blocked. For example, you will not find the engineering menu in the CyanogenMod firmware, which is very popular among users. The reason is simple - initially the firmware was developed for devices based on Snapdragon.
- thirdly, the manufacturer himself can act as a source of problems, who hid the engineering menu more reliably or decided to remove it altogether. Here we also attribute all sorts of errors, from which not one of the devices is insured.
Actually, solutions to problems lie on the surface. If the smartphone is on Snapdragon, Intel or Tegra, then in most cases nothing will be done. However, on these devices you can also access a number of hidden settings, which we will discuss below. By the way, on Xiaomi smartphones, which are mostly based on Qualcomm chips, access to the engineering can be obtained by clicking on the “Kernel version” in the smartphone’s settings several times (section “About the phone”). Finally, in some cases, flashing the Android device to the stock (official) firmware will help.
The second way to open access to the engineering menu can be applications. There are a lot of them, you can download for free from, but almost all are designed for smartphones based on the MediaTek processor. The MTK Engineering Mode application has proved to be quite good. Hidden Android Settings is a similar application in features. As an example, also the “Start MTK Engineering Menu” can be offered.
Again, not the fact that each of the programs will work seamlessly on your device - there are a hundred reasons why they will refuse to function. Small companies are developing such tools, so you probably have to try a few.
What can be configured in the engineering menu?
how appearance interface, and a set of settings for the settings may vary for different smartphones. If you take the device on Qualcomm Snapdragon, then often all you can do is look at the information about the various modules and perform some tests. Make any changes to the settings will not work. But smartphones on MediaTek offer much more features: sound configuration, network settings, various modules, and so on.
So, regardless of the fact that the external interface of the engineering menu may differ on different devices, it will not be difficult to deal with the items. Let's go through the main features.
Once again: you make the changes at your own risk. Do not change parameter values \u200b\u200bthat you do not know anything about.
Informative features of the Android engineering menu
The first thing that the Android engineering menu offers is to study various information about the device. It mainly refers to the network, wireless interfaces and battery (on smartphones with Snapdragon processors using the command * # * # 4636 # * # *). What can be seen in these sections:
- IMEI phone - a special (unique) number that is assigned to each smartphone;
- Phone number - not always indicated;
- Network - indicates the current operator;
- Roaming - whether or not you are;
- Network information - discussed or not, enabled or disabled;
- Call Forwarding - used or not;
- Network type, network index;
- The volume of the signal and your location as coordinates.
In the section "About the battery":
- Status: charging or not;
- Charge level (in percent);
- Voltage and temperature;
- The technology by which the element is produced;
- Time since last reboot.
One of the sections allows you to view information about the use of applications on the smartphone (name, last launch date, duration). In addition, a separate section of the engineering menu on Android is dedicated to the wireless interface. Here you will find information about the status of the connection, the name of the network, you can find out the speed and some other data.
Testing smartphone parameters in the engineering menu
A rather interesting feature of the engineering menu, which allows you to test various parameters of the smartphone. It often helps to find the source of the problem, due to which the system does not function correctly. What specific tests can be done:
- Complex (Automatic Test) - each parameter of the smartphone is tested;
- Report - a test report is provided;
- Testing buttons, memory cards and SIM-cards, vibration, speakers, connectors - all this can be checked for performance;
- Screen tests - for brightness, sensitivity and so on;
- Testing cameras and flash, flashlight, wireless interfaces and sensors (gyroscope, accelerometer and others).
Again, the set of testing options may vary. It all depends on the engineering menu of a specific Android device. Undoubtedly, useful features that are useful to many users. For example, when buying a used smartphone, you can test the screen for performance.
Change settings in the hidden menu of Android
If in the case of testing or studying information about the phone or tablet there is nothing to fear, then you need to make changes carefully. It’s better not to touch the parameters, the purposes of which you do not know, as well as take screenshots or mark on the leaflet all that you change. If you encounter problems, you can return the options to their default values. Consider here the most interesting sections.
Set up cellular communications (Telephony) and change IMEI
Android Engineering Menu - Frequencies
Here are concentrated settings for changing network settings. You are unlikely to be able to disable the smartphone by changing these parameters, but you can disrupt the network search, so remember where to take pictures and where to put checkmarks so that in the future, if anything, put everything back in place.
Typically, changes to this section are made in order to reduce energy consumption.
First, you can remove the selection from the frequencies (subsection Band mode) on which your operator does not work. Find out in which ranges your mobile operator, uncheck all the others. This will help to slightly reduce energy consumption, as it will know exactly what frequencies it is connected to.
In the same subsection, on the contrary, you can include the desired frequency. This is necessary when the manufacturer from the factory does not activate the necessary for your region. For example, often “out of the box” Chinese smartphones cannot work in Russia with LTE. This problem will help to solve the service menu on Android.
Secondly, in the subsection Network selectingwe can prioritize the networks that are used for access (2G, 3G, 4G). Everything is done for the same purpose: increasing battery life. As a rule, 3G and / or 4G networks are disabled. Not every region has support for these networks, and the communication module, however, continues to search for them, spending energy. Disconnected - and no problem. In addition, the device will not switch to 3G or 4G, spending traffic.
In subsection Gprs, for us, ordinary users, it’s better not to climb if there is no good reason. Here you can find various settings for the smartphone to work with the network, and there is also an item for changing IMEI.
Attention! There have been precedents for criminal prosecution for illegally changing IMEI numbers. Most often, the penalty is a monetary fine, a suspended sentence. However, there have been cases of real imprisonment.
IMEI change function may come in handy after unsuccessful attempt firmware when the identification number “flies”. Then you can simply rewrite it from the box in which the device is supplied.
Connectivity
Here, just as with GPRS, most have nothing to do. The section itself is intended to make changes to the settings of Wi-Fi and Bluetooth modules. You won’t be able to configure anything in the section to make the smartphone work better, but you can easily harm an electronic comrade. Therefore, here we use only the testing functions, and if you need to make some corrections to return the device to working condition, we carefully study the purpose of each parameter on the Web.
Setting the sound volume in the Android engineering menu (Audio)
Android engineering menu - volume setting
Judging by the number of queries in the search, it’s precisely in order to increase the volume that Android users resort to the engineering menu. Everything is quite simple:
- Select the Hardware Testing -\u003e Audio tab. Select the desired mode;
- Normal Mode - responsible for outputting sound to the main speaker.
- Headset Mode - with its help, the sound volume in the headphones is adjusted.
- LoudSpeaker - includes settings for adjusting sound parameters during speakerphone.
- Headset_LoudSpeaker Mode - allows you to increase or decrease the sound volume for the speakerphone mode with the connected headphones.
- Now we select from the drop-down list for which device we will adjust the volume in the Android engineering menu;
Sip - options for Internet telephony. Mic - sets the sensitivity of the microphone. Sph (maybe two) - setting the spoken speaker. Media - multimedia speaker (main). Finally, the point that is best left untouched is Sid. After changes, an echo may appear.
- The line “Level” sets the value of the volume level, which is tied to each step (pressing) of the volume rocker. The default is 0. You can not touch it, unless, of course, the sound on your device does not jump abruptly when you press the button.
- The line “Value is” sets the value of each step (volume level);
- The most interesting line is “Max Vol”, with the help of which the maximum volume on Android is increased through the engineering menu.
As a rule, the smartphone manufacturer does not set the maximum value, so we can correct it ourselves. Note that at the highest level, wheezing is observed. To select the most comfortable value, we sort through the options.
Android secret codes
In addition to the engineering menu, you can use secret codes to access various functions. It’s also hard to predict which team will work on your device. Consider the most popular and useful:
| *#06# | Get the smartphone’s IMEI |
| *#*#232338#*#* | Find out the MAC address and Wi-Fi data |
| *#*#232337#*#* | Show Bluetooth address |
| *#*#3264#*#* | Displays RAM information |
| *#*#1234#*#* , | Learn all about the software part |
| *#*#2663#*#* | View screen sensor details |
| *#34971539# | Displays information about installed camera sensors |
| *#0*# | Used for a comprehensive test smartphone |
| *#*#0*#*#* | Useful for the test screen |
| *#*#2664#*#* | Runs a display sensor test |
| *#*#0842#*#* | Makes a vibration test |
| *#*#0289#*#* | Useful for sound testing |
| *#*#1575#*#* | Starts GPS module testing |
| *#*#7262626#*#* | Used to check mobile communications. |
| *#*#7780#*#* | Reset smartphone settings - fully or partially |
| #*5376# | Erases all SMS from a smartphone |
| #*3851# | Useful for rebooting the device |
| *#2263# | Setting Network Ranges |
| *#*#273283*255*663282*#*#* | Invokes backup files |
