Calibrating the Android battery through the Xiaomi engineering menu

Every modern smartphone based on Android or iOS has many interesting features. Every year, devices are equipped with more and more complex functions that make working with the phone easier. One of the features of smartphones is sensors, of which there are more than a dozen. Xiaomi also has a lot of these.

Long-term use of the device leads to disruption of the sensors. Because of this, the automatic brightness of the screen may not be adjusted correctly at different times of the day, and there will be problems when pressing the screen, since touches are detected incorrectly.

As for smartphones, calibrating the Xiaomi proximity sensor will help fix the problem. This procedure allows you to configure the sensor responses to the correct response, also with other types of sensors. It is worth noting that devices from other companies do not have this function.

Xiaomi battery calibration

Constant use of any Xiaomi smartphone leads not only to a decrease in its battery life, but also to disruption of the sensors that collect information about the charge level. The system receives unreliable data and may indicate that the battery is already charged long before the charging process is completed. Because of this, the service life of the battery is reduced, and the level of autonomy of the phone decreases. Calibrating the Xiaomi battery will help correct the situation, after which the gadget will charge correctly, and the charge information will correspond to reality. In order to calibrate the battery, you can use two methods - standard and requiring Superuser rights.

Option 2 - using root rights

To calibrate a Xiaomi battery using this method, you must have superuser rights.

Attention: careless actions in superuser mode can lead to bricking of the device.

To calibrate, follow these steps:

Gain access to root folders or root rights.
Install an explorer with superuser rights, for example, Root Explorer.
Turn off the device and start charging.
After the device indicates that it has reached full charge, start it without disconnecting it from the charger.
Tap on the Root Explorer shortcut and launch the program.
Find the “Data” directory in Explorer. Go into it and open the “System” folder.

Find the batterystats.bin file and delete it.
Disconnect the smartphone from the charger and use it until it is completely turned off. Then charge it to 100%. The process is over.

Via root access

The first method allows you to calibrate the battery faster and easier. However, the user must have root rights obtained using a special application. Utilities such as Root Explorer, KingRoot and a number of other programs that can be downloaded from the Play Market are suitable for this.

To calibrate, the user must perform the following steps:

Install the application on your Xiaomi phone to obtain root rights.
Run the utility with Superuser rights.
Turn off the gadget, put it on charge and wait until the battery is 100% charged.
Turn on the device without disconnecting it from the charger.
Open Root Explorer, go to the “Data File” tab and select Select system.
Delete the batterystats.bin file.
Disconnect the smartphone from the power supply and use it until the battery is completely discharged.
Charge a completely dead phone to 100%, completing the calibration.

It is expected that after this the time of using the phone will increase by several percent. Calibration when using KingRoot is slightly different - to remove it you will need to install a special BatteryCalibration application.

Additional Information

Frequent charging and discharging operations of the battery negatively affect its capacity. This applies to all Xiaomi smartphones, be it the Note line or more budget versions. Therefore, if after 3-4 cycles there is no improvement in battery performance, then there is no need to carry out these actions anymore. In this case, the battery needs to be replaced.

You need to be careful with the root option. Erasing the batterystats.bin file has a limited effect and will only work if there are errors in the Android OS. If there are problems with the battery controller, this method will not fix them. Also, when you turn on root, the warranty on the gadget disappears.

To consolidate the results of the second option with superuser rights, you can use the Battery Calibration Pro application and similar ones, downloading them from the Play Market. After deleting batterystats.bin and turning on the smartphone, launch the program and click on the “Calibrate” button. The program will perform the necessary operations and notify you when the work is completed.

When charging the battery with external chargers, monitor the temperature. If the temperature is too high—more than 40°C—damage to the battery or controller may occur. Zero or negative temperatures are also not recommended, as this will lead to a sharp decrease in capacity.

Xiaomi does not recommend using battery calibration, since most often the procedure does not help increase the operating time of the device. A positive effect is possible in case of software failures. If physical degradation of the battery has occurred, the described methods will not help and you will have to replace it.

other methods

Sometimes restoring sensors and increasing battery life using root rights does not suit the user. Firstly, this removes the warranty on the smartphone, and in some cases it is impossible to install certain programs or games on such a device. It is worth noting that root rights also increase the risk of infection by a virus, and, therefore, access of strangers to information stored on the mobile device.

To calibrate the battery without obtaining Superuser rights, you can use the following method:

Fully charge the smartphone while it is turned on (when the charge reaches 100%, the LED indicator on the case should turn green).
Disconnect the phone from the charger.
Turn off the gadget by putting it on charge, after which the LED should light up again.
Turn off charging and turn on the smartphone again, waiting for the operating system to load.
Quickly turn off the gadget as soon as the Mi launcher appears on the screen.
Repeat connecting to the network and disconnecting again.
Launch the gadget and use it as usual. Battery calibration can be considered complete.

The user of any Xiaomi gadget should know that the manufacturer does not recommend using either the first or second method of restoring performance. While none of these will damage the battery, the calibration may not result in a positive result. An increase in autonomy is observed only in cases where the problem was caused by errors in the software. If the battery begins to perform worse due to the process of “chemical aging”, it will run out just as quickly.

Source

Operating principle and preparation

It must be taken into account that during calibration there is no physical impact on the battery. Starting the process will not increase its capacity. The correlation between the actual battery charge and its display on the smartphone screen will be clarified.

After numerous processes of charging and discharging a smartphone, errors occur in the Android OS in accurately determining the state of charge of the battery. It is possible that, when the phone is not fully charged, the display will display information about 100% charge.

The result of repeating such mistakes will be a decrease in battery capacity, which means a decrease in the battery life of the smartphone.

You need to resort to calibration in the following cases:

The smartphone began to discharge faster;
there is an abrupt change in the charge indicator;
the phone turns off at values other than 0, for example, 10-25%;
the battery stops “filling” when the readings are less than 100%.

If you calibrate Xiaomi gadgets, the error will disappear and the display of information about the state of charge will become correct. Before doing this, it is necessary to visually inspect the battery if it is removable.

If electrolyte leaks in the form of drips or swelling are detected, then calibration should not be carried out. In this case, the battery has failed and must be replaced.

With a non-removable battery, such defects are determined by the presence of spots on the display, the appearance of irregularities on the back of the smartphone as a result of swelling of the battery. Calibration in this case is useless and, on top of that, dangerous - it can lead to fire of the gadget.

If no signs of physical damage are found, you should proceed to the setup procedure. With a collapsible case design, it is advisable to remove the battery and charge it in a separate charger.

Do you need Xiaomi (Redmi) battery calibration and what is it?

Nowadays, Android smartphones have a large number of settings and capabilities. Developers are adding new sophisticated features that make phones easier to use. One of these features is the multitude of sensors and their settings.

Often, the normal operation of the sensors is disrupted when using the device for a long time. For this reason, the functioning of the gadget is disrupted: automatic brightness is adjusted incorrectly, touches and gestures are detected inaccurately, etc.

Many of these problems are eliminated by calibrating the sensors. This procedure configures the correct response of the sensors. By the way, such convenient functions when working with engineering mode are not available on devices from other companies.

Engineering menu Proximity sensor Battery Compass Screen

So, in order to begin calibrating sensors or checking various elements of the device, including battery wear, or, for example, switching network ranges and other useful settings that are not available in the standard “Settings” menu, you must first enter a special menu.

Calibration of components in Xiaomi smartphones

Engineering menu

Depending on the device, software version and localization, it may look slightly different, but the meaning is the same, so in this article we will look at the general algorithms and logic for setting up sensors for all manufacturer’s devices, without being distracted by the specific features of various firmware.

View on different devices

In order to get into the Xiaomi engineering menu (also known as QC Test) there are several options:

1) Dial *#*#6484#*#* on your phone (all Xiaomi devices) If that doesn’t work, you can also try *#*#4636#*#* or *#*#3646633#*#*

2) Go to phone settings , find the “about device” item, find the “kernel version” line and quickly click on it 3-5 times (almost all devices from 2012 to the present support this function).

3) Turn off and turn on the phone again by holding down the top volume button and the power button (does not work on all devices)

4) There is also a way to install a special MTK Engineering application and gain access through it, but as a rule, some functions in this case may not work correctly.

Option 1 - without superuser rights

The method is applicable to all smartphones of the Mi and Redmi lines.

It is implemented as follows:

First you need to completely discharge the gadget. Carry out the process smoothly, use a medium load, for example, launch a video player.
After turning off the phone, wait about 5 minutes and try to turn it on again.
If the smartphone turns on, repeat the discharge until it turns off again. Make sure that the device does not turn on.
After this, begin the charging procedure. If the battery is removable, then it is better to charge it using third-party chargers. They can carry out the entire process using low charging current. If the battery is built-in, then use slow charging.

When reaching 100%, do not disconnect the smartphone from the charger, but wait another 20-30 minutes.
Disconnect charging and reboot the device. If after switching on the charge value is not maximum, connect the charger. Bring it to 100% and restart the system. It is necessary to ensure that after startup the smartphone shows the maximum state of charge.
Discharge the battery to zero as indicated in steps 1-3.
Fully charge the battery again according to steps 4-6.

By repeating the algorithm 2-3 times, you can achieve the correct display of the battery fullness indicator.

You can also use a third-party application for calibration, such as Battery Monitor. This program visualizes the amount of battery charge, and you can monitor the charging “online” during the process of energy transfer.

To debug, do the following:

Determine the nominal capacity of the battery. To do this, in the smartphone settings, find the “About device” or “About phone” item and tap on it. The list that opens will contain the required data, expressed in mAh.
Download and install the application.
Launch the program and start charging the gadget. Monitor the process using Battery Monitor.
When the nominal capacity value is reached, turn off the charger. Restart the device.

It may take several cycles of similar actions before the battery reaches the declared electrical capacity.

How to find out if there are problems with your battery

Are you confusing the symptoms of a bad battery with operating system malfunctions? If this component fails, then you will not be able to restore its previous “health” using calibration.

If your phone has a removable battery, then open the back cover and take it out. Examine it from all sides to look for defects or damage. The mobile device could fall, resulting in irreparable damage and loss of capacity. The main signs of malfunction are dents and swelling. Also check if the contacts on the battery and the smartphone itself are clean. Just in case, wipe them and return it to its place.

Have you noticed any visible flaws in the battery? If not, then you can safely continue reading, however, in case of any damage, it is better to replace it with a new one, and it is recommended to take the original part with a guarantee to protect yourself from future problems.

Briefly about the main thing

Let's summarize:

Calibration is needed so that the operating system (MIUI or Android) receives correct data about the actual battery volume and displays the correct value.
It cannot be done frequently: this will lead to accelerated degradation of the battery.
Calibration will not help extend the life of the Xiaomi battery or increase its capacity. It also does not in any way affect the charging currents.
The optimization procedure can be carried out using applications from Google Play or manually.
To calibrate using Android, you must have Root installed on your phone.

Proximity sensor

The necessary function is available in the engineering menu on almost all smartphones.

First you need to check its activity:

1) In the “Phone” section, select the “Menu” item 2) Then you will need to go to settings 3) The Incoming calls section is located 4) In the proximity sensor line, the option should be active 5) Then go to the engineering menu. 6) The QC test opens (Engineering mode), where you need to find “Proximity Sensor”

7) Then the user should try to press his finger on the top panel, if the value changes, then the meter is working properly.

Disable unnecessary applications

To speed up Xiaomi Redmi 9 or any other Chinese brand smartphone, you can disable unnecessary options. One of them is the above-mentioned Mi Share. In addition to it, there are other applications running in the background. For example, in the phone settings under Connection and sharing

There is a
Print
.
It hides two active processes ( Mi Home Print Service
and
System Print Service
) that constantly consume battery power and load the processor in the background. These options can be safely disabled if you do not print documents from the smartphone’s memory.

Another way is through global settings.

Turn off the device, then press two buttons ( on and volume down ) after vibration or the logo appears, release. After this, the engineering menu immediately appears, immediately change the Chinese characters to English letters. At the bottom right, click on the touch button, and a list of languages will appear, select English . Don't be afraid to click, as the rest will drop down a menu to confirm.

Find the section ( test ), place the device on a flat surface and click on ( Accelerometer ), and if the values are not zero, then click calibration. If it works, then good, and you don’t need to do anything else. For some reason, this method does not help most phones, and the value does not return to zero.

How to speed up your Xiaomi phone and what you need for it

Smartphones from this Chinese company have their own MIUI shell, which is based on the well-known Android. The company regularly works to improve the platform and releases updates. At the moment, the current version is MIUI 12, so using its example we will tell you how to speed up Xiaomi.

MIUI 12 is based on the Android 10 mobile platform. Some of the functions and capabilities of the operating system were retained, and some were modified, changing beyond recognition. Many tech bloggers and observers called MIUI 12 revolutionary, as it has a greatly updated interface, improved security system, animation and much more. But what to do if you updated your old smartphone to the latest version of the shell and it started to work slower?

Battery

With prolonged use, the battery charge readings may become inaccurate, and as a result, the device will not charge correctly. Subsequently, the battery itself may also be subject to increased wear. To avoid problems, you need to calibrate it.

There are two ways to do this. The first consists of fully charging the device while it is turned on and the following steps:

Disconnecting the charging cable
Complete shutdown, and after a couple of seconds - connection to the mains. The LED lights up green
After that, turn off charging and turn on the gadget. When the operating system boots, it turns off again. Everything must be done quickly;
Switching on and further operation.

In the second case, root rights are used.

The smartphone turns off and connects to the charger. It is better if the adapter is plugged into a power outlet
The LED will turn green, then the OS will turn on and load
All of the following steps can only be performed with superuser rights. Downloading "Root Explorer"
After going through the data-system folders, a file called batterystats.bin is deleted
Then the charger is turned off and the device is used until it is completely discharged and turns off automatically.
Charges up to 100%.

After all steps, the battery is calibrated, the exact energy capacity value will be noted by the system. It is also possible to increase battery autonomy using various settings and changing firmware versions.

Battery calibration

Why do you need to calibrate the battery of Xiaomi smartphones?

During long-term use of the phone, data on the full charge and discharge of the battery may be incorrect, and as a result, the smartphone may not charge correctly. This problem shortens the battery life. To fix this you will need to calibrate the battery.

The first method of calibration is that the device must be fully charged while turned on and the following manipulations must be performed:

Disconnect the charging cable from the phone;
Turn off your phone completely and after a couple of seconds, reconnect the charging cable. The LED should light green;
Unplug the charger again and turn on the phone. After loading the OS, turn it off again. We carry out all actions very quickly;
We begin to charge the switched off phone. As soon as the LED turns green, disconnect the smartphone from the charger again.
Turn it on and use it.

This was the easiest way to calibrate the battery on xiaomi.

The next method is to use Root rights. To do this, you need to prepare by reading each point of the instructions below:

Turn off the smartphone completely and connect it to the charging cable. It is advisable that the adapter be connected to an outlet.
After the device LED turns green, the device must be turned on and wait for the operating system to fully load.
Further actions will work if you have superuser rights. Download the “Root Explorer” application.
Go to the data/system directory and find the batterystats.bin file that we are deleting.
We disconnect the charger and use the smartphone until it turns off automatically.
We charge the phone up to 100%.

Now the xiaomi smartphone battery is fully calibrated and the system has “remembered” the exact capacity value.

Manually calibrating the battery on Android

This method does not involve installing any applications; all you need is a phone and a charger.

The first thing you will need to do is charge the battery until the screen of your device shows that the charge is 100%. After this, unplug the charger and turn off the phone. Connect the charging cable to the switched off phone and plug it into the network again until a signal appears on the screen of the switched off phone indicating that the battery is fully charged.

The next step is to turn on the phone and disable the ability to turn off the screen backlight in the settings (usually in Android, this is: display settings - sleep mode). When your phone stops going into sleep mode, start charging the battery again to 100%. Disabling sleep mode is necessary to allow your smartphone's battery to drain faster, thereby causing your battery to drain faster. So, after the smartphone is charged, leave it to discharge with the display on. When the smartphone is discharged, charge it again. This should be enough for your smartphone to start using energy properly again. This is where the “manual” calibration method ends. Don't forget to turn Sleep Mode back on.

Android battery calibration apps and programs

There are a huge number of applications aimed at improving the battery life of your smartphone. Today we will focus on one of them, the most popular - Battery Callibration.

Method one - calibrate the battery

Keep your phone turned on and connected to a charger (you can use USB and a charging cable). The LED will turn green once the battery is fully charged, now do the following:

disconnect the phone from the charger
turn off the phone, then plug in the charger, let the phone's charging LED light turn green again
Unplug the charger and turn on the phone until the phone turns on and fully loads the MIUI operating system, then quickly turn it off
reconnect the charger to the switched off phone, wait a few minutes after the LED turns green again
disconnect the phone from the charger, turn on the phone and use it normally

After this, your battery will be fully calibrated. Below is an easier and faster method for rooted Xiaomi smartphones. Attention: you do all actions with the system only at your own responsibility.

Compass

Most Xiaomi firmwares have a built-in Compass application. Its calibration occurs according to the following algorithm:

In the settings there is a section for installed applications, you need to go into it
You will need to find the program of the same name
Clear the cache using the clear data button
Then the smartphone should be rebooted
You will need to find it on the screen, often it is located in Tools
It runs where you need to allow access to geolocation data
An instruction will appear that you should follow (usually it requires performing a gesture in the form of the number eight), the smartphone must be positioned horizontally

You will feel a vibration and the calibrated compass will open. There are also special applications such as GPS Status & Toolbox, which allow you to fine-tune and, in some cases, cure rare bugs when the blade of one of the axes is not calibrated using standard means.

Improving image quality on a Xiaomi smartphone

The most important property of this chip is its high computing performance. This allows the processor to calculate the position, brightness and color of each point on the screen.

The image quality and smoothness of the MIUI firmware interface correspond to the processor performance, the amount of RAM and the resources of the graphics chip that is included in the SoC.

All smartphones out of the box have standard medium settings. Therefore, enthusiasts have some options to improve image quality using hardware methods.

Mi smartphones generally use Adreno video accelerators. The most common are also Mali chips from ARM and Power VR from Imagination.

How to improve image quality on a smartphone

Each firmware has tools for configuring the operation of the video accelerator. But to do this you need to use the developer menu. To enter it, you need to go to Settings-About device-Firmware version.

You need to click on Firmware Version 8 times and you will receive developer rights.

Now go to the menu and find the following options.

By doing these operations, you can improve the quality and smoothness of the images on your smartphone screen. If something goes wrong, everything can be returned to the original settings.

Source

Screen

The problem with incorrect touch detection and poor sensor response is also easily fixed. There is a specific algorithm for this:

It is recommended to remove the protective glass or film
The process is performed through a hidden menu, which you need to enter by entering the combination
You will need to find the "Touchpanel" option
Next, according to the manual, you need to swipe your finger across the display.

There is another option to calibrate the display by downloading special applications, such as TouchScreen Repair.

But it is better to use them only if the standard method does not lead to improved performance. If this does not help, most likely the problem lies in another malfunction, in which case it is better to contact a service center for help.

Screen calibration

If, when you press the screen, the sensor does not respond well, or touches are detected incorrectly, it is possible to correct the problem. To do this, the sensor is calibrated. The process involves the following series of actions:

To calibrate the screen, it is advisable to remove the protective film or glass, but this is only a recommendation;
We go to the engineering menu by entering the command *#*#6484#*#*;
Find the “Touchpanel” option;
We move our fingers across the screen according to the instructions.

It is possible to use specialized applications that can be downloaded from the Play Market. These include Touchscreen Calibration, Display Calibration and the like. We use them last.

Thus, we looked at two ways to calibrate the display. If it doesn't help, then the problem is somewhere else.

How to find out if your smartphone needs calibration

It is important to know when you can use calibration to solve battery problems. Here is a list of situations in which this procedure can help:

A sharp drop in charge percentage.
The phone does not charge 100 percent.
Deterioration in device battery life.
The device suddenly turns off, even after being fully charged.

These are the most common options, try calibrating the battery according to the instructions below, but first we’ll figure out if there are problems with the battery itself.

Why is it better to calibrate the Xiaomi Mi 9 battery?

If you are under the impression that the battery percentage displayed on your Xiaomi Mi 9 is not correct or that it has failed, it is time to take care of it. We often think that our phone battery can be thrown away, when in fact this very often does not work and with a few manipulations we can solve this problem.

Many people are facing the same problem with the battery of their Xiaomi Mi 9, it announces for example 40% battery when in fact you only have 10% left . This situation is confusing in the sense that it doesn't allow you to properly manage your phone's autonomy. This is actually caused by the loss of battery power, we will find out how to increase it and get more reliable readings in recalibrating the battery of your Xiaomi Mi 9.

Most popular method

If the firmware is changed, the best answer to the question of how to calibrate the battery on Android will sound very simple. You need to reset the battery usage statistics and force the system to create the file again.

There is a popular and fairly widespread method - the Battery Calibration program. It acts radically and simply, forcing Android to recognize the battery as the first and only one and set the power system parameters in accordance with its characteristics.

The application will need root access to delete statistics. Battery Calibration can be downloaded from PlayMarket, it is easy to install and does not require configuration. You won’t have to spend a lot of time figuring out how to calibrate the battery on your tablet either. The procedure is as follows:

Install Battery Calibration;
Fully charge the tablet when turned off;
Turn on the device and launch the program;
In front of us is a single button. Click;
Battery Calibration will ask for a superuser name.

Video on how to use the Battery Calibration app:

Having specified the required data and confirmed the choice, the user initiates overwriting the statistics file and creating parameters that are responsible for only 100% battery charge. Then the system will do everything itself according to the readings of the battery controller.

[Tips] How to restore screen sensitivity?

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It is important to choose one that will not reduce the sensitivity of the screen and at the same time can protect your display from damage.

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Thank you very much, I always read your topics with great pleasure, in each I scoop up with a spoon, no, I scoop up huge amounts of tasty and useful knowledge with a large chef’s ladle!

Hello! You can learn more about calibrating screen sensitivity through the engineer. menu, otherwise everything is in English. And then he immediately wrote to me Fail.

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