During the conversation, the screen is blocked. Calibration of the approximation sensor on Xiaomi Redmi, Note, MI devices

and goes out when calling and does not turn on. What to configure and how to correct?

Many users face a problem when phone either android tablet starts to capricious. It seems that nothing happened that could cause a malfunction, and it works not as it should.

For example, problems with the fact that the screen illumination is either its power on / off function, etc. Do not work correctly. The reason why may be:

1st: Software failure - i.e. The problem lies in the failure software

2nd: Hardware failure - i.e. The problem lies in the "hardware" (that is, it is required to replace or restore the spare parts of the gadget)

However, do not rush to get upset - in 90% of cases with problems operations of the power supply control system, backlight adjustment, display / off display smartphone A EY tablet and on the basis of Android is to blame software failurewhich you can completely fix on your own.

Correct the program failure:

Method 1.Pretty simple - come in "Settings", find there « backup and reset "in which you choose full reset Settings with deleting all data. Be careful, the use of this method is often effective, but entails the removal of all photos, contacts, passwords, music, games, video, and in general, all the information stored on your smartphone E or tablet E. Therefore, pre-save everything you need by connecting the gadget to the computer. If this method does not suit you, or if the problem is not eliminated after it, see Method 2..

Method 2..

Based on solving problems with the screen telephone ov i. oS tablet based on Android method Implementing additional software. Utilities controlling all processes inside gadgets. Today, there are quite a lot of them, however, the fewer functions contain an application, the greater, as a rule, it is effective. Best controls the system functions, adjusts, and fixes everything possible mistakes Settings and synchronization is small, and easy to handle, free utility for Android devices. Download app from Google Play. and see it additional options In the description you can. After installing the application, it remains only to run. Next, from you, in principle, nothing more needs. The application will fully take control of the device functions. (By the way, in addition to all other things, the gadget will begin to charge 20% faster, and it will also significantly increase its productivity, which will reflect on the boot speed and work of all applications, games, and the system as a whole. On average, after scanning, the system works on 50% faster.)

Method 3.

Changing the software device, or, as it is also called "Pere firmware ".This methodAs a rule, requires certain skills and is solved by means of contacting the service center. To independently implement this task, you need to contact the manufacturer of your device, download the utility needs for the firmware and the firmware itself, after which reinstall it on your gadget.

If not one of the ways did not bring the results, unfortunately, you will have to contact the service center for repair and yours tablet A EY smartphone a.

On the smartphone either android tablet Does not go out or backlight. Or the smartphone screen goes out when calling and does not turn on.

If the screen does not turn on android after the conversation, or it does not go out when making a call when the gadget is deposited to the ear, then you need to look for the causes of the approximation sensor. When the sensor breaks down, the phone can correctly determine the position in space, because of which the screen does not light up, but the device works.

This article is suitable for phones and tablets of all manufacturers of devices on Android: Samsung, LG, Sony, Huawei, Xiaomi, HTC, ZTE, Fly, Alcatel and others. We are not responsible for your actions.

The main function of the approximation sensor is to automatically turn on and disconnect the backlight when talking. This significantly saves the battery charge and eliminates the random press of the cheek or the ear touchscreen of your device.

When the android gadget does not go out during the call, you should search for an error in the sensor. Allocate the following reasons:

Mechanical impact, damage to the loop or other components.
Moisture hit.
Problems with firmware.
Lack of RAM.
Bad visibility (covered / covered with a cover or protective film).

Before applying software troubleshooting methods, you need to wipe the screen. Here, special attention should be deleted to the upper part, where the approximation sensor is located. If the display has a glued glass or a film, over time they are able to lose in transparency, which will interfere with the sensor.

Increase

You still need to check the call settings. There is a chance that their parameters are not set correctly, and the sensor is simply turned off. This option is not available in all smartphones, but it is necessary to check anyway.

Open the settings, go to the "Parameters" or "My Devices" menu.
In the "Calls" section you need to make sure that a check mark is installed near the line "Sensor of the approximation".

Increase

The user must make sure that there is enough RAM in the system so that the sensor function normally. To do this, we open the list of applications in the settings and in the "Working" section, we check how much RAM gadget spends. When the shortage is detected, we complete the work unnecessary applications.

Gasnet screen on Android during call

With the approximation sensor in the device on android, problems occur when the screen comes off immediately and becomes black. It happens that the screen goes out and does not turn on when the outgoing call or when answering a call.

The contactless sensor has several functions, it is the most important that automatically illumination and displays are properly called. This is done by determining that the smartphone is located next to the user's face.

When the gadget is approaching the ear, the sensor determines this and turns off the screen to prevent accidental separation of the conversation and to save the battery. When the user removes the device from the ear, the screen lights up, after which you can disable the call or use other functions (switch the conversation on the speaker, turn on the numeric keypad, etc.).

Initially, you need to remove tempered glass or film from the smartphone. In some gadget designs, they close the sensor, which causes an erroneous detection distance. Quite often, the reason is in the glass - there are many poor-quality, cheap products that do not differ in reliability.

If you tear the tempered glass, then the normal functioning of the sensor can be restored. Some such a way may seem ridiculous, but enough to see how much on the Internet complaints about problems with this sensor, which occur after gluing such glass.

In some cases, it is possible to solve the problem by updating the software. For example, some applications contribute to the deregulation of the sensor. In this situation, you can apply free appwhich in several stages will calibrate the sensor. This feature can be performed by the Proximity Sensor Reset utility.

Working with this application is not difficult. The settings wizard will hold you throughout the process, and at the end it is necessary to confirm the new calibration, after which the gadget will reboot. Then it should be checked whether the calibration was effective and the phone screen goes out during the conversation.

If the warranty period of your gadget has already passed, other solutions did not give the result, and the sensor itself is damaged physically, then you can turn off the screen shutdown when talking. The screen will not be turned on constantly when telephone conversationAnd you can apply the on-screen buttons to remove the keyboard or activate a loud connection.

Minus this solution There will be a permanent conversation with a lit screen, which is why you can accidentally press the buttons. To disable the approximation sensor, you must load a special XPosed Framework module. This process is performed only if there is root rightWhat gives administrative privileges.

Some owners of android devices help the methods of cleaning the dynamics mesh, if the motion sensor is located there. To do this, take a small brush and clean everything carefully.

On the Internet there are many questions on telephone sony Z3 Compact, it is on it very often with calls the screen goes out. This problem has been able to solve this problem by pressing on the right upper angle (there is a sensor).

There are cases when on the Xperia Z3 during a strong pressure on the top of the screen, a click inside is heard. After that, the problem disappears.

Some gadgets in call settings have an intellectual processing parameter. If you find it, you can try to disable the parameter. In the Sony phones, the screen is often unpaved, therefore a similar problem is formed. It can be solved by a neat liner.

In the settings, you can disable the Incall UI application. If the process does not help, you can try to enable notifications for this software in the settings.

Screen problems on Android after sleeping mode

Another problem may occur with the screen - it does not start after sleep mode. There may be black or white screen, but the smartphone itself continues to function. If there is a problem, you need to know that the reasons may be hardware or software:

Ingestion of moisture housing.
Mechanical impact.
Incorrect operation of the power button.
Problems with firmware.
Lack of RAM.

If the smartphone does not turn on, but when incoming call Or performing other actions vibrates, that is, the probability that the problem can be solved without visiting the service center. Need from extra processes to clean rAM By completing unnecessary applications. If this does not give effect, make a backup important information and reset system settings To the factory state.

Mobile phones gave us luxury communication, the ability to receive information and entertainment anywhere. What device can be called perfect? Opinions will disperse, but reliability will prefer most of the users: to work everywhere, discharged slowly.

Manufacturers firms compete in the release of new products of modern powerful communicators. Their filling copes with video demonstration, allows you to open the pages of sites, as on a regular PC, spend leisure for full games. A set of functions of smartphones is really impressive.

K.'s habit large smartphones With a convenient 5-6-inch displays, it appears quickly, it is no longer want to return to smaller models. Similar to the purchase of a car: Having tried a foreign car, a person is unlikely to be satisfied with the domestic car.
The wide possibilities of smartphones as mini-computers in your pockets do not abolize phone functions. We are so accustomed to call from everywhere and always that even small malfunctions begin to annoy.
In order to extend the service life of the apparatus without recharging, manufacturers made autofunction of the screen repayment when bringing to the ear. When the display of the phone does not go out when talking, the battery is discharged faster, and random clicks on the screen violate the conversation.

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Technical ways to solve the disbelief sensor faults

In the touchscreen smartphones at the top of the front panel there is a approximation sensor. This sensor is needed to save energy and eliminate the random triggering of the sensor during the conversation. When the phone is approached to the face during the conversation, the approximation sensor disables the display and sensor. If the sensor works incorrectly, the display either does not go out at all during the conversation, or it goes away at once at the beginning of the conversation, and it is impossible to finish the conversation. Correction options:

Remove the protective film, wipe the screen. Film or dirt on the front panel can lead to a disruption of the operation of the sensor.
Make a general reset. This will help if the sensor is calibrated. Reset can return it to factory values, and the sensor will start working normally.
Temporary solution - To turn on the display during a conversation, you can undermine the buttons, insert a headset or charging, the display will light up, and you can reset a call.
If the problem is in the sensor itself, then it must be changed. DIY repair Telephones are impossible by the user of such a defect. In our authorized SC, you will replace the sensor to the new one.

If the Android does not turn on the screen after talking or does not go out during the call when you take the ear, then look for the cause of the problem in operation. When it breaks, the device cannot correctly determine the position in space, so the screen does not light up, but the phone works.

This article is suitable for all brands producing phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, Zte, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Screen problems when calling on android

The main function The approximation sensor is automatic inclusion and disabling the backlight during the conversation. This allows you to save the battery charge and eliminate the accidental press of the ear or cheek touch screen Your gadget.

If your device on android does not go out during the call, or the screen does not turn on after the conversation is complete, then the problem should be signed just in the operation of the sensor. Causes may be as follows:

Bad visibility (covered / covered with a protective film or cover).
Lack of RAM.
Problems with firmware.
Moisture hit.
Mechanical impact and damage to the loop or other components.

Before proceeding to the software troubleshooting methods, wipe the screen thoroughly. Special attention is paid to the upper part, where the approximation sensor is just located. If a film or glass is pasted on the display, then over time they can lose in transparency and also interfere with the sensor.

Then check the call settings - perhaps the parameters are incorrectly set, and the sensor is simply turned off. This option is not in all phones, but it is worth checking.

Open the settings and go to the "My Devices" or "Parameters" section.
On the "Calls" tab, make sure that the check mark is a check mark near the approximation sensor.

Increase

Also, make sure that the system has enough RAM to work the sensor. Open the list of applications in the settings and on the "Working" tab, see what the volume of RAM is spending. If you find a shortage, complete the operation of unnecessary applications.

If everything is set in the settings correctly, but the sensor does not work, make backup Important data and reset android settings To the factory state. If after the hard reset, the problem is saved, you will have to perform flashing phone. If no software methods, including flashing, have not eliminated the problem, it is recommended to contact service center To diagnose hardware faults.

Problems with screen on android after sleeping mode

Another problem that may occur with the screen - it does not turn on after the sleep mode. It can be either black, but the phone works. If you encountered such a situation, then know that the reasons may also have software and hardware:

Lack of RAM.
Problems with firmware.
Incorrect operation of the power button.
Mechanical impact (blow, fall).
Moisture getting inside the housing.

If the phone does not turn on, but vibrates with an incoming call or other actions, then the likelihood is that the problem can be eliminated without contacting the service center. Clean the RAM from unnecessary processes by completing the operation of the applications unnecessary at the moment. If it does not help, make a backup of important data and reset the system settings to the factory state.

Increase

If hard reset also has not eliminated the problem, you will have to perform flashing device. It is important not to forget to make a backup before each serious intervention operation to the work of Android.

Phones from year to year evolve, becoming an increasingly complex device that has on board with a dozen all sorts of sensors. Each of them is responsible for certain functions. For example, for regulating the autowarity of the screen and its shutdown, the approximation sensor corresponds to the conversation, it is also called the light or illumination sensor. Calibration of the approximation sensor on xiaomi Redmi. or note devices It will help to correct the improper operation of the sensor, which can deliver a lot of problems to the smartphone owner, for example, random clicks on the screen during the conversation. The causes of improper work may be several. If you do not help a banal restart of the device, then let's look at the reasons for the degree of their complexity.

Turn on the light sensor

Your sensor can be simply turned off. To turn it on, you need to do several steps, consider on example Xiaomi. REDMI 3S.
Open the application "Phone" (a dialer in common)
Long press on the menu
In the list that opens, select "Incoming Calls"
Then we find in the list "Sensor of the approximation" and turn it on if it is disabled

Part of Xiaomi models of such an option may not be or this function will be distinguished by the location in the menu. Unfortunately, it is impossible to give the universal path of the menu due to a wide variety of models and firmware.

Turn off "harmful" functions

The most common cause of an incorrectly operating sensor is the included "blocking in pocket" function, the meaning of which does not allow the screen when the smartphone lies in your pocket. Due to this option, the light sensor often triggers incorrectly.

This problem is relevant at all xiaomi firmwareFor some reason, the engineers do not want to correct this problem or believe that everything works as it should, however, in some users, this function does not cause problems. To turn off the lock in your pocket, you need to go to the settings, then in "Calls" and then in Inbound Calls, there you can find the slider that turns this function.

What can interfere with the sensor

One of the reasons for an incorrectly working approximation sensor is physical interference in its work, namely protective film or glass. For example, our employee at Xiaomi Redmi Note 3 Pro does not work this sensor approximation for this reason. If you do not have holes for the light sensor, then you need to or change the film / glass or do it hole yourself. This sensor is usually located above the screen, next to frontal chamber and a conversational speaker. This problem usually sin low-quality or universal films. Therefore, before buying a protective coating, be sure to check the presence of all holes.

Test and calibrate light sensor

Checking the light sensor

A rather popular solution is to calibrate the sensor approximation of Xiaomi devices. To begin with, you need to check the sensor performance in the phone, for this you type the following numbers * # * # 6484 # * # * (call button is not needed), thanks to this combination you will fall into engineering menu, Tested on Xiaomi Mi4 and Xiaomi Redmi 3 Pro, other ways to get there are described in our article about the engineering menu.
5 buttons on a black background will be displayed.

Click on the top right, there must be written "Single Item Test".

In the list of components, you need to find and select "Proximity Sensor", it is usually almost at the very bottom.

In the dough itself, the inscription "far" or "close" will be displayed, closing and opening the illumination sensor (for example, with a finger), the inscription must change. If this does not happen, then this module faulty.
After this text, you can try to make calibration.

Calibration of the light sensor

Consider calibration on the example smartphone Xiaomi. REDMI 3S.

Turn off completely smartphone.

Click the VOLUME + button (increasing the volume), and not releasing it, press the inclusion button. Your device must jar, after that, the buttons can be released.

You will open a menu, in 95% of cases it will be in Chinese (including Xiaomi Redmi 3S). You need to click on the "中文" button, it is in the bottom line to the right of the "Download 模式" button. After that, the menu language will be changed into English.

Click on the "PCBA TEST" button in top string And we have an engineering menu.

If the touchscreen does not work, we move using the "UP" and "DOWN" buttons to the Proximity Sensor item and go to it.

It is necessary to horizontally put the phone on a flat surface.

The light sensor should not be closed (it is better to rub it with a cloth).

Make sure that the phone does not fall bright light.

Click on the calibration button "Calibration", the sensor will be calibrated.

After the inscription "SUCCESSFULLY" appears, it means that the calibration has been successfully completed.

Now it is necessary to check the operation of this module, cover the light sensor with an opaque item, on the screen 1 should be changed by 0 and vice versa.

After that, you may need to press the "Pass" button, you will fall back to the engineering menu, click "Finish" there, then "Power Off", the phone must be turned off.

Turn on the phone and check the sensor operation. When calling the screen should go out only when you bring the phone to the ear.
On our personal experience The correct operation of the Xiaomi Redmi 3 approximation sensor was completely restored in this way.

Incorrect device firmware

If the calibration does not help, the reason for the incorrect work of the smartphone may be incorrect flashing, this applies not only to the light sensor. The problem is that new firmware incorrectly rises on a smartphone, getting the remaining garbage from old firmware. This problem concerns the update method through a regular recovery (loader). The transition to new versions should be done through FastBoot or with a reset of all settings and user data (full wipe). Of minuses this method It is worth noting that all your data and applications will be deleted, but all the garbage will be removed with them.

Other reasons

If the previous methods did not have a proper effect, then the reason for the screen can be replaced on poor quality. Unfortunately, on-screen modules for phones xiaomi. Delivered with light sensor. If you have already done the screen replacement in the service, then it is possible that despite all the convictions of the master, you just put a poor-quality screen with a bad sensor. In case, from the beginning of the purchase itself, your smartphone works incorrectly, then a simple marriage can be the reason. We advise you to contact the seller for further instructions.

We hope you helped these advice, be sure to write in the comments if this article helped you and which board helped you.