Calibration of the screen and sensor on Android: setup and programs. Setting up settings on all Android smartphones significantly improves Internet speed. Manual calibration using Android

Golovna / Optimization of work

Actions that go into calibrating the Android screen include adjusting the touch-type display using the method of directly setting up commands through touching the sensor with a stylus or fingers. Without carrying out such adjustment of the devices, we will work, but in this case there are very few unnecessary consequences when using the gadget.

Some devices running the Android operating system that are equipped with touch screens may sometimes encounter the undesirable problem of screen unresponsiveness. In other words, if you touch the stylus or finger at the point of the touchscreen, the gadget receives just another command.

Or there may be situations when the sensor issues commands only after the third or fourth try. As a rule, the cause of these problems is incorrect operation of the screen itself, for which it is necessary to calibrate the touchscreen of the device.

The terminology and correct calibration of the touchscreen on Android may be necessary in almost all cases, such as a smartphone falling from any height, and after a seizure the device is given a procedure in the middle.

Also, calibration of the sensor on Android is necessary after repair work from replacing the screen, water splashes appearing under the crack of the screen, and after other seemingly insignificant damage has occurred.

To verify the need to carry out this procedure, you must perform the following steps:

Remove the special glue that protects the screen (to ensure the most correct operation of the sensor);
Enter either the letter or the number;
If the button pressed on the gadget screen and the typed information are inconsistent, adjusting the touchscreen is necessary.

Basic methods of calibration

There are two ways to ensure that the sensor-sensor is not in the normal position.

These basic methods are discussed:

Vikoristanny of special programs for the Android system;
Self-correction.

It is necessary to respect that for many brands (Samsung, HTC, Nokia and other Android devices) the calibration procedures are virtually identical.

Testers of Android devices, as a rule, can test two types of sensors:

resistive (with a screen manufactured using this technology, all sorts of problems often arise, so adjustments are more required here, but similar screens today are practically not subject to troubleshooting - these systems can be noted more in budget or even older models);
Amnesty (found in most gadgets, more reliable and clear).

Touchscreen calibration using Android technology

If you have access to the Google Play assortment, the display of your Android device can be configured in another way without any problems.

Pokrokov's instructions in this case can look like this:

Go to the gadget in the “Customization” menu;
Vibrate the “Phone Options” item;
Find the text “Calibration, press the button;
A meta-cross will appear on the screen, like a speck in the middle;
Press the center of the target that has appeared at least three times.

After carrying out the operation of the device, you can independently perform the memory function. In this way, the calibration will be completed. After completing the setup procedure, you need to check the robot's touchscreen for the result of pressing the symbol on the screen that will appear after your entry.

Program for calibrating the Android screen

You can adjust the sensor using special software. With free and cost-free access to the Internet, you will find the necessary software to successfully complete this process.

Programs are difficult to install during installation. But above all, these are the ones that practically, regardless of any of them, you can get a positive and effective result. In the Google Play store you can find such free programs as Bubble and many others.

supplement
This program has a admin interface and also has several additional special features. Advantages of zastosuvannya:

Bubble is a cost-free program;
Works efficiently with tablets and smartphones;
Advertising is influenced by customizations, which can be deprived of the desire of consumers;
Advanced graphics;
There is also a special display that displays with high accuracy in parts of the degree of heat;
Simplicity of Wikoristanny;
The ability to fix a cut with a gesture or a click;
The presence of a sound signal for the zero position of the cutter;
If necessary, you can lock the screen orientation (horizontal or vertical);
Possibility of reinstalling programs on an SD card;
Please note that the “sleep” mode is necessary during program operation;
Vikoristannya full-screen mode.

Vikoristannya programs are not at all difficult. To do this, after initial launch, in the settings, select the type of screen orientation of the device (or set the “Auto” mode) and carry out calibration for the device.
With this method, the phone is placed horizontally and the calibration button is pressed on the left side of the screen. Calidbration may appear on the touchscreen, followed by Wait. The program will be ready to function if zero degree values are displayed on the screen.

The add-on is a program that allows you to adjust the screen parameters of the touch device, thereby increasing its sensitivity and efficiency. Advantages:

In case of excessive dryness on the touchscreen, this addition allows you to significantly improve the sensitivity of the sensor;
A satisfactory effect is observed due to the drying of the dry spit;
With the use of such a device as a stylus, tuning the gadget becomes simply necessary for additional programs. This program can be closed without ignoring it (after the adjustment, your hand can hide on the screen when the stylus is frozen);
If you need to change various settings, you can create shortcuts around them to quickly launch programs;
The program has a cost-free version.

The program is a professional tool for precise adjustment of the iPhone or iPodTouch. The supplement is used for the most important tasks or in more complex areas of the research, where the structure needs to be adjusted accurately. Advantages:

Possibility of a full-screen mode, which allows you to move the direction of pressing on the lower and upper arrows located in the middle of the gadget screen;
Extended double-sided calibration, which allows adjustment to be carried out on a surface that is far from level. Either way, it is directly calibrated in order to remove the necessary accuracy;
Possibility of cat-free riding;

Possible problems with calibration

In this case, since calibration of the device is not carried out in a suitable way, and the use of supplements does not provide the necessary positive changes, then the fakers recommend trying a different program, since there are plenty of them available, software which is actually very different. You can also try Hard reboot or, in other words, restart the device.

As a last resort, calibration can be carried out by sending it to a service center. A similar problem with the device screen can be caused not only by incorrect adjustment values, but also by serious reasons. Zokrema, in the hardware damage of the elements of the device and the obviousness of the factory gate. Once again, they will turn even more violently to the fakhivts of the alleged violation.

It is also necessary to note that, depending on the screen calibration, the gadget may need to check and adjust the screen sensitivity parameters for further accurate operation.

Power Clean is a popular tool for optimizing the work of Android devices. The main characteristic feature of this master is purification.

Smartphones and tablets that run on the Android OS pose a similar problem for wealthy people.

Pressing your hand on the pulse of the Internet connection may be even more intense. For example, this is how you can clearly demonstrate to koristuvachs who are far from technology that surfing at Merezha consumes traffic, and does not detract from the attraction of the new episode of “Simply Mary”. Fortunately, there is now a clear understanding of the value of technology and the benefits that can be made for any Android user. All you need to do is go to Google Play and install it on your device.

Of course, as simple as displaying the connection speed in the status bar, users can choose another route - for example, deny root access and install an Xposed module. But for the most part, this is not without a statement, but rather vague, which also means a loss of warranty. On the right is a simple installation of programs from the Market, which saves unnecessary hassle for anyone.

So, all you need to do is follow the instructions and install and run the Internet Speed Meter program. As a result, your status bar will be displayed in real time. In addition, the program will recover all traffic traffic. In settings you can also specify connection speed limits and set a limit for mobile data.

It is also significant that the Pro version, available for 125 rubles, has many more functions (including a widget) and a very nice external look with elements

Although touch devices are more manual, precision can be lost through sensor operation, and in many cases, it does not depend on the type of screen, or the brand and model of the device.

In connection with this, any such sensor (and screen) urgently needs adjustment or calibration. This article describes how to calibrate and adjust the screen on Android.

The essence of the problem

Apparently, while the phone or tablet is new, the brightness of the robotic sensor is even higher.

Vіn dosit quickly reacts to dots, dosit accurately indicates the point where you pressed the kistuvach, etc.

Over time, as the actual operating time of the device increases, the efficiency decreases and errors and inaccuracies begin to appear.

How do you know that you need to calibrate the display on your mobile device?

Don't worry if you start There appear to be attacks of the offensive type, which is strictly respected for practice:

The sensor needs to be used again and again- Actions are not recognized and the device does not respond in any way;
It is not recognized that it is bad to practice actions, but not everything (for example, you can do it normally, but like a discount - it doesn’t work right away or on the spot);
The actual place where the action took place is not clearly indicated(for example, the wrong button is pressed to the one you pressed correctly);
Significantly longer hours of cleansing the line after doing this or anything else on the touch screen;
Starting to work harder with the display only when you use the stylus, or, on the off chance, only;
In graphic applications, this problem may appear as interruption of the line that is painted etc.

The origin of such a problem, in essence, is a normal and natural process, Any leftovers can be easily removed using basic methods without paying for the service.

When does he show up?

Trivala operation of the device This is the first reason why the sensor power on phones and tablets is gradually decreasing.

This is a normal process that all modern phones follow and the settings screen on the device is smaller.

Also, such a phenomenon occurs and, however, with too much troubling inactivity, a device that was previously actively used.

In some cases, it is necessary to improve the screen immediately after purchase, so it happens that Initially the sensor settings are incorrect.

After changing the display, you will also need it again.

Changes in software settings also affect the brightness and fluidity of the sensor. This may be the case, or it may be the adjustment, apparently suddenly changed by the koristuvach. For example, you can change the sensitivity of the sensor to make it easier to use the phone.

Ale, A decrease in the power of the robot device may be due to other reasons.

For example, this occurs when smudges and abrasions appear on the screen, applied with an unclear dry melt or when a bulb is stored under it.

For which type of calibration the calibration will not be effective and the problem will not go away.

Viznachennya

What is calibration, and how does it solve the problem of an insensitive and inaccurate sensor?

Calibration is the process of adjusting the touch screen, which is vibrated by the device based on the actions of the sensor, as the device is configured.

The standard calibration procedure is based on this method: dots appear on the screen, or crosses are in good order and the user must press on them.

Based on this process, the system will create a pattern of dots and sections on the screen, which means that some of them are more sensitive, some are less accurate, some are more accurate, some are less accurate.

Based on the data of such diagnostics, the system adjusts and eliminates malfunctions.

Carry out calibration with the device you use most often. If you use the stylus more often, then calibrate the screen with it; if you use the phone manually, then calibrate with your finger. This is due to the fact that different objects have different thermal conductivity and the screen can react to them slightly differently from a technical point of view.

Calibration methods

There are many ways to accomplish this kind of improvement. The simplest and most effective of them are described below.

If, after trying one or the other method, the results of the changes did not work out better, then it is important to try another method.

I'll fix it up

Calibration of the device is a necessary process; most creators included such a function when setting up the device. How can I get around it quickly?

1 Go to I'll fix it up;

2 Go to section Screen or else Display(Can be called differently, depending on the device model, Android version or the nature of Russification;

3 Go to section Screen calibration/recalibrate the screen or the like (remember that there is no such section on any devices at all, not to mention those that need to be installed in a different way);

4 If there is such a function, then after clicking on it, a special test will run, in which case you need to press the points on the songs in the world where they appear or in the right order (on different devices the order of the test can be changed, otherwise the essence will be lost);

5 After completing all necessary actions, the system will show you notifications about those who have completed the test, now separated Setting up You can close it.

Some improvements in the robotic sensor are avoided immediately after this. If you are too smart, your tablet or smartphone needs to be re-engaged.

Engineering menu

Engineering menu– this is a special section of adjustment, in which more complex and precise adjustments and adjustments can be carried out. In some cases, there is a calibration function, for example, on these devices, for which this test does not include a simple menu for adjusting the device.

Download and install Touchscreen Calibration

In order for this add-on to appear on your phone, make a step:

Open the Play Market program on your device;

In the sound system, enter Touchscreen Calibration and open the program with the phone and wrench icon;
Click the Install button;

After this, it will automatically download and install, at which time a label will be created on the work table attached.

After clicking on the Install button, the program will automatically download and install on your device. You can find the shortcut for this launch on the main work table.

The addition is expanding, oriented towards the Anglo-majorist, who lacks Russification, as before.

It can provide a wide range of functionality and helps to carry out clear adjustments. In order to adjust the sensor for further assistance, make a step:

1 Launch the program from the shortcut to Work table;

2 Find the program item in the main menu Display Calibration and press on someone;

3 Now you need to bake a little Some of this process does not look like a point-by-point test, but it looks like an automatic detection of malfunctions, and then an automatic improvement of the screen;

4 When the process starts, A notification will appear on the main screen of the program, showing the progress of the improvement;

5 If the process is completed, you will need to re-lock your phone.

After re-enabling any folding devices, there is no problem with the sensor operation.

When and how do you need to calibrate the sensor?

Today, Android devices can display two types of screens - resistive and non-resistive. The first type stagnates in older devices, while in all modern gadgets the other type is used, which remains the most reliable in work.

With this in mind, it is important to learn that resistive screens require sensor calibration adjustments more often (approximately once every 2-3 months).

It’s no less true that you can make a list of situations if the power supply of how to calibrate the sensor on Android happens to be in the first place. The reasons could be a few. Among them you can see the following:

mechanically adjusted screen;
hit the vlogs and saw;
sticker for either a dry warehouse or a spit coating;
buying a used device secondhand, etc.

How to calibrate the sensor on Android: basic methods

Well, before calibration itself, you can create a calculation in the following ways:

You will need to learn the additional features of the Android operating system yourself;
calibrate the sensor using additional specialized utilities;
Deliver the device to the service center.

The skin from such methods has its advantages and disadvantages, which will be discussed later in the report.

Manual calibration using Android

At its simplest, the problem of how to calibrate the sensor on a tablet or smartphone is quite simple.

For the first test on the device, you need to select the settings menu and select the sensitivity section of the device. The new menu has a special test button that needs to be pressed.

The calibration setup is located in the phone (tablet) setup section, which is the main row. When you enter this menu, a cross with a red dot in the middle will appear on the screen, so you can press it more precisely (do this 3-4 times), then save the settings and check the gadget for accuracy. If some elements of the heating system are not functioning correctly, repeat the adjustment.

In addition, you can regulate not only the force of pressure or the accuracy of hitting the point on the screen, but also adjust the sequence of actions (stretching the image, single or double pressure, pulling the screen, etc.).

Please note that the program for the Android sensor has been installed - the version of the operating system can be changed in another menu, for example, in display settings. In addition, the setting of the speed indicator parameters in most cases is carried out in the section of your input, so be careful.

A selection of specialized utilities

If the sensor calibration program is not found in the system menu or there are problems with the system, you can quickly install additional utilities, among which the most popular are:

Bubble;
TOPON;
GPS Status & Toolbox;
Clinometer is similar.

At any time, you can go to the official Google Play service to find the required utility there. There are programs for Android there, so you don’t need to know how to install them, but you can also find them on the Internet, but then you have to install them manually, allowing for quick installation without anyone their dzherel. In addition, you can install special utilities for these Windows systems (together with the Android emulator) and set up settings for them.

Return to the service center

Programs for Android systems are good. What else is there to do that is expected from these methods and does not give the desired result? Obviously, the problem is that the vinyl device itself has a serious breakdown, due to which the application of software methods does not work.

In this case, the problem of how to calibrate the sensor on Android is limited to sending the gadget to an authorized or private service center. Naturally, without wasting a penny, the counterfeiters will be able to identify and pinpoint the cause of the problem. Before that, everything is lying there and it looks like it was broken. In this case, as you understand, there will be internal conflicts in the components of the device itself.

What's to be done?

Axis, power, and everything that worries about how to calibrate the sensor on Android. As we speak about the best technique, in the simplest way it is best to use the developed features of mobile devices. If their stagnation does not give results, or precise calibration for some reasons cannot be determined, then try third-party programs.

Don’t forget that not everything and not always lies within the software itself. As was previously thought, the impossibility of using such methods may be due to the breakdown of the device itself, but here it is impossible to do without the assistance of facists. In addition, the device may still be under warranty, and it is not possible to buy it yourself (so you can waste it). If you decide that the owner of the gadget does not require the necessary repairs or technical maintenance knowledge, you should try to carry out experiments on the device as well.

Otherwise, in the opinion that everything is in order with the device itself, it is recommended to turn to third-party utilities, since most of them allow you to carry out more fine-tuning, and others may also use the testing module, allowing you to To complete the test, set the recommended parameters.

At first glance, Android can be an extremely simple operating system, but in this case (especially in other versions) there are no additional functions and adjustments that can make your life much easier. Therefore, before you try to remove root and install tons of software on your smartphone, you should better familiarize yourself with the functionality.

SAFE MODE
Android is called Safe Mode. Operating in this mode, the operating system disables all installed programs, which can result in your smartphone being infected with a screen blocker. To activate it, just press the power button until the “Activate Life” button appears, and then place your finger on it. The smartphone is nearing re-engineering.

BLACK LIST
Black lists of numbers have always been a stumbling block for Android users. The system itself does not provide such capabilities, and the add-ons available in the market implement blocking of numbers through hacks and not always correctly (most of these add-ons are simply given by a third-party dialer, who picks up the phone and immediately puts it away).

However, blocking can be removed in stock Android, for which you can simply send unwanted subscribers to voicemail. To create this, click on the required contact, then click on the edit icon (“olive”), then select the “Only voice” item from the menu. mail." There, before speaking, you can set a ringtone for the subscriber.

SHVIDKI VIDPOVIDI
This is the name of the Swedish dialer - this is a function that allows you to send an SMS directly to the dialer. There are many types of statements like “I can’t talk”, “I’ll call you back”. It's boring and boring to finish. If you want something more creative, the message templates can be edited: “Phone -> menu -> Settings -> Speech messages”.

Using third-party programs in safe mode, boosting contacts to the black list and editing specific types for Android.

SMALL Tricks
To change the register of letters or to make sure that the entered words or sentences begin with a capital, just see the notification and press the Shift button until the desired result is found.
In Android 5/6, access to the settings can be removed by pulling up the curtain with two fingers.
You can quickly turn down the vibration mode in Android 5/6 by pressing the volume button and then tapping on the end of the left side of the slider.
Android has a screen magnifier. To wrap this up, go to “Customization -> Special.” Possibility -> Extremely extreme." Now you can increase the size of the screen by stomping on it three times.
To enable automatically created icons on your desktop, launch the Play Store, go to Settings and uncheck the “Add icons” box.

ENHANCED WI-FI CONFIGURATION
In Android, it is completely unknown and unknown for most of the computer sections to be configured with additional Wi-Fi options. To get to this point, you need to go to “Settings -> Wi-Fi”, then press the menu key and select “Additional functions”. Here you can enable notifications about the detection of firewalls, turn on Wi-Fi in sleep mode (I don’t recommend it: operating in passive mode, the Wi-Fi module consumes less battery than when turned on/in), protect against firewalls Wi-Fi with bad signal and set up Wi-Fi Direct (directly accessing devices without a corrupted access point).

SYNCHRONIZATION ENABLED
Android now enables auto-synchronization (push notifications) with all services added to the “Settings -> Accounts” section. In Pershu Chergu there is a Google account, as well as Skype and
Other services. You may not need most types of synchronization (for example, Google+ synchronization), so you can better enable them all at once by clicking on the three checkmarks and unchecking the “Auto-sync data” checkbox. And you can only do the following types of data: click on one of the cloud records, select the cloud record and select (or check) the checkboxes.

ENABLE STOCK ADDITIVES
Have you ever seen before installing a driver that can be launched in the background or simply drags an unnecessary shortcut to launch from the list of add-ons? Fortunately, in Android you can enable a lot of previously installed programs. Go to “Options -> Programs” and open the “All” tab. Now you need to go through the list. Select the required program, and then “Enable”. Now I recommend clicking on “Erase the tributes”. For frozen programs, click the “Disabled” tab. Unfortunately, not all programs can be frozen. Yaki - lie near the vibrator.

Extensions menu for setting up WIFI, Synchronization settings and a list of enabled programs.

MOBILE TRAFFIC CONTROL
In Android, you can manage Internet traffic without third-party programs. For this purpose, there is a special item “Data transfer” in the settings. There you can set a traffic limit, when someone reaches you, a notification will appear, and also a limit, after someone has moved, data transfer will automatically stop. For each program, statistics are kept based on data from the background and active modes, and a graph will be created. Starting from Android 5.0, this interface is available in quick settings (curtain), by tapping at the end of the mobile view.

CONNECTION WITH PIN CODE
PIN code is a great way to protect information on your smartphone from third-party eyes. It is also necessary to continuously enter the PIN code, especially at home, where it is not necessary. Therefore, Android has a mechanism for automatically enabling a PIN code in so-called secure areas. To activate it, go to “Setup -> Security -> Trust Agents” and turn on Smart Lock. Turn to the “Security” section, press Smart Lock, enter the PIN code. Next, select the item “Safe place” and add any place to be lured.

“DO NOT TURN” MODE IMPORTANT CONTACTS
In Android 5.0, a new “Don’t turbulence” mode has appeared (in the fifth version, available with adjustable volume, in the sixth version - through the icon in the settings), which makes the smartphone absolutely silent for the first hour (or until the alarm clock). Everything would be fine, even if you leave your smartphone, it will still wake you up with chimes. Fortunately, this behavior can be changed.

We open the settings window, click on the “Don’t turbulence” item, click on “Settings” in the menu, select the “Only Important” section. On the screen, in the middle of other settings, you will see two items: “Messages” and “Weeks”. They have “Only from contacts” specified, which means that calls and notifications will be accepted from everyone who is in contacts. The best choice would be “Those from tagged contacts”, those who you have marked with a star from the dealer. You can select “No one”.

Control of add-on traffic, easy adjustment of Smart Lock and adjustment of the “do not turbo” mode

VOIDOMLENE
There are a lot of programs that like to spam messages, especially games that suffer from them, or even completely new programs. Luckily, you can get information. To select “Adjustments -> Programs -> All”, find the error and select the “Advancement” item. Here you can either turn on all notifications at once (“Block all”) or allow only “guessed” messages (“Short notifications”).

Setting up notifications Google Play Market

EXPANDED INTERNAL MEMORY OF DEVICES
In Android it's always been
problem with expanding the internal space of the smartphone. The connected SD card did not allow it to work, remaining like an “external” creature. The function of transferring add-ons to a memory card, which appeared in Android 2.2, also did not change its position. Sure enough, in Android 6.0 Google decided to fix everything. Now, after connecting a flash drive or SD card, the system presents two options:

vikorystuvati її ї ї їнініній (standard mode, ї ї in previous versions);
earn your inner savings. For this type of device, format an ext4 flash drive with 128-bit AES encryption and mount it as a system partition. Next, a test will be carried out to determine the speed of reading and writing. At the same time, unfortunately, all memory cards obviously sacrifice the speed of the memory stored in the device, which in theory can lead to problems with the robot device. Fortunately, due to the productivity of the disk subsystem, there is at least an hour left to write a specific program or interesting part (game locations, for example). And all calculations are carried out by disk. Also, you won’t be sitting on the FPS of your loved ones.

BLOCKING MODE FOR ADDITIVE
If there is a need to hand over a smartphone to a third party, there is always a risk that they will want to dig through your friends and other confidential information. To prevent this from happening, you can use the “Program blocking” function, available in Android 5.0. This add-on will not be able to be accessed using the “Add Home” and “Look” buttons, and the screen will not turn dark.

To activate this function, you need to open the “Security” item in the settings, click on “Program blocking” and press the jumper at the top of the page. Next, to lock the screen on the selected program, you must press the “Look” button, then the violin icon on the screen of the selected program. To strengthen it, press both the “Back” and “Look” buttons at the same time.

Includes blocking of the add-on and retailer options

OPTIONS FOR RETAILERS
When setting up, click on the item “About phone” and there you will find “Folder number”. Let's stomp on this new time. Now let’s turn back to the setup and the very new section “For Learners.”

USB improvement. These are the ones that allow the phone to communicate with the computer via Android Debug Bridge (ADB). Vikoristovuetsya middle of the development of Android or for vikonanny ADB commands.
Roztashuvannya of the showman. You can check the number of times you touch the screen and test the touchscreen. Shows the coordinates of the torsion and the trajectory of the roc.
Window animation: scale, transition animation – allows you to adjust the fluidity of the animation. Whatever is less significant is better. Before speaking, adjustments are carried out only within the system, without rushing through additions.
GPU is faster. In current versions, practically nothing changes.
Do not turn on data transfer - after connecting to a Wi-Fi network, data transfer via mobile networks will not be applied (or the data itself will not be transferred). This is designed for quick switching to a mobile network when the Wi-Fi signal is lost. Energy consumption is growing slightly.
Limit of background processes. Maximum number of processes running in the background. Before speaking, system programs and adjustments do not bother.
Show off the fascination with the CPU. In the upper right corner, on top of all the windows, the names of the processes that match the processor to the real time are displayed, and the scale of preference for the processor.

FINE CUSTOMIZATION OF THE INTERFACE
Android 6.0 now has a set of options for tuning the interface, as well as options for users and users. To prevent them, pull out the curtain and place your finger on the gears on the screen (they should start spinning) until you see a notification on the screen. Now the System UI Tuner item may appear in the settings, for which you can change the settings and dial
Buttons are customized, turn off the display of battery charge level and customize the display of icons in a row.

Multi-window mode

Multi-window mode
Another new, and even cooler, feature of Android 6.0 is the multi-window mode. In theory, you have to activate the additional remix in these very options for the retailer, which are only available in custom Android systems with new or custom firmware. To enable this mode in stock firmware, you need to remove root rights, add the line ro.build.type=userdebug to the file /system/build.prop and re-enable. The easiest way is to use the terminal available in the market:
su
mount -o remount, rw/system
echo ro.build.type=userdebug » /system/build.prop
reboot

Now, after activating the multi-window mode, any two programs can be launched on one screen (with a vertical edge) by pressing the “Look” button and tapping on the end of the open square on the desired program.

SERVICE CODE (ENTER VIA DIALER)
1. *#06#* - IMEI display.
2. *#*#4636#*#* - one of the highest codes. Divided into four items: information about the device (IMEI, phone number, operator name, signal strength in decibels and a large number of other information, such as the list and selecting the shortest type i: 4G (LTE only), 3G (WCDMA) only), 2G and so on, continues until re-installation), information about the battery (charge level, temperature, voltage, technology and a lot of other data), statistics (hour of operation of all add-ons from the moment the device is turned on and the remaining hour) launch), Wi- Fi information.
3. *#*#759#*#* - Rlz Debug UI. Unique Device ID, PID, ACAP and other data related to the installation of add-ons. Here you can enable OEM Mode and view information about Client IDs.
4. *#*#426#*#* - a summary of various information about devices, connections with Google Play services. For example: Device ID, port and address of streaming connection to many services, date of last synchronization, etc.
5. *#*#225#*#* - information about the number of events that are saved in the calendar. Є sorting by type.

VISNOVOK
As a matter of fact, stock Android is already functional and does not require the installation of many programs, which simply duplicate the standard capabilities of the OS. Sometimes the stench is strong, but often such programs hang near the background and disappear