Calibrating the proximity sensor on xiaomi redmi, note, mi devices. On Android the screen does not turn off during a call

The proximity sensor is responsible for dimming the iPhone screen during a call. It triggers when something covers it. During a conversation, this “something” is the person’s head, to which the iPhone is brought. Thus, if the iPhone screen does not go dark during a call, the proximity sensor is to blame. How to figure out why the screen does not go off during a call on an iPhone is described in this guide.

Place a piece of tape on the proximity sensor

Most often, problems with the proximity sensor occur after replacing the screen on the iPhone. The sensor is brought to life by one method that has been proven many times. You need to stick a small piece of transparent tape on the sensor, and then paint over the tape with a black marker.

Service center technicians also note that instead of tape, it is more effective to use a piece of rubber band about 5 mm long. It needs to be stuck between the light and proximity sensors, after which the problem with the iPhone screen turning on during a call will disappear.

Of course, to gain access to the sensor, the iPhone will have to be disassembled. You can do this yourself. The instructions below provide a detailed breakdown of the various iPhone models.

But it goes out when called and does not turn on. What to configure and how to fix?

Many users encounter a problem when phone or The Android tablet starts acting up. It seems that nothing happened that could cause a malfunction, but it does not work as it should.

For example, the device has problems with the fact that the screen backlight or its on/off functions, etc. don't work correctly. The reason for this may be:

1st: Software glitch- i.e. the problem is a software glitch

2nd: Hardware failure- i.e. the problem is in the hardware (i.e., replacement or restoration of spare parts for the gadget is required)

However, do not rush to get upset - in 90% of cases there are problems operation of the power supply control system, backlight adjustment, display on/off smartphone a or Android tablet is to blame software glitch which you can easily fix on your own.

Fixing a software glitch:

Method 1. Quite simple - go to "settings", find there "backup and reset", in which you choose full reset settings with deletion of all data. Be careful, using this method is often effective, but it entails deleting all photos, contacts, passwords, music, games, videos and, in general, all information stored on your smartphone e or tablet e. Therefore, first save everything you need by connecting the gadget to your computer. If this method does not suit you, or if after this the problem is not resolved, see Method 2.

Method 2.

Based on solving screen problems phone number and tablets based on Android by introducing additional software. Utilities that control all processes inside gadgets. Today, there are quite a lot of them, however, the fewer functions an application contains, the more effective it is, as a rule. The best way to monitor system functions, corrects, and correct all possible settings and synchronization errors is a small, easy-to-use, free utility for Android-based devices. You can download the application from Google Play and see its additional options in the description. After installing the application, all that remains is to launch it. Further, in principle, nothing more is required from you. The application will take full control of the device's functions. (By the way, among other things, the gadget will begin to charge 20% faster, and its performance will also increase significantly, which will affect the loading speed and operation of all applications, games, and the system as a whole. On average, after scanning, the system runs at 50% faster.)

Method 3.

Changing the device software, or as it is also called "re firmware ". This method, as a rule, requires certain skills and can be solved by contacting the Service Center. To carry out this task yourself, you need to contact the website of the manufacturer of your device, download the utilities necessary for flashing the firmware and the firmware itself, and then reinstall it on your gadget.

If none of the methods brings results, unfortunately, you will have to contact the Service Center for repairing your tablet a or smartphone a.

On an Android smartphone or tablet, the screen or backlight does not go out. Or the smartphone screen goes blank during a call and does not turn on.

If the screen on Android does not turn on after a conversation or does not go off during a call when you put it to your ear, then you should look for the cause of the problem in the work. If it breaks down, the device cannot correctly determine its position in space, so the screen does not light up, but the phone works.

This article is suitable for all brands that produce 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.

Problems with the screen when making calls on Android

The main function of the proximity sensor is to automatically turn the backlight on and off during a call. This allows you to save battery power and prevent accidental pressing of your ear or cheek on the touch screen of your gadget.

If your Android device does not turn off during a call, or the screen does not turn on after the call ends, then you should look for the problem in the operation of the sensor. The reasons may be as follows:

Poor visibility (covered/covered with protective film or cover).
Lack of RAM.
Problems with the firmware.
Moisture ingress.
Mechanical impact and damage to the cable or other components.

Before attempting software troubleshooting, thoroughly wipe the screen. Pay special attention to the top part, where the proximity sensor is located. If film or glass is glued to the display, then over time they may lose transparency and also interfere with the sensor.

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

Open Settings and go to “My Devices” or “Options”.
On the Calls tab, make sure there is a checkmark next to Proximity Sensor.

Increase

Also, make sure that the system has enough RAM to run the sensor. Open the list of applications in settings and on the “Running” tab look at how much RAM your phone is using. If you find a shortage, shut down unnecessary applications.

If everything is set correctly in the settings, but the sensor does not work, make a backup copy of your important data and reset Android settings to factory state. If the problem persists after a hard reset, you will have to reflash the phone. If no software methods, including flashing, do not fix the problem, it is recommended to contact a service center to diagnose hardware problems.

Problems with the screen on Android after sleep mode

Another problem that may arise with the screen is that it does not turn on after sleep mode. It may or may not be black, but the phone works. If you are faced with such a situation, then know that the reasons can also be software or hardware in nature:

Lack of RAM.
Problems with the firmware.
The power button is not working correctly.
Mechanical impact (impact, fall).
Moisture getting inside the case.

If the phone does not turn on, but vibrates when there is an incoming call or other actions, then there is a high probability that the problem can be fixed without contacting a service center. Clear your RAM of unnecessary processes by shutting down currently unnecessary applications. If this does not help, make a backup of your important data and reset the system settings to the factory state.

Increase

If a hard reset also does not fix the problem, you will have to flash the device. It is important not to forget to make a backup copy before each serious operation to interfere with Android.

If the screen on Android does not turn on after a conversation, or it does not go off when making a call when the gadget is brought to the ear, then you need to look for reasons in the operation of the proximity sensor. When the sensor breaks, the phone cannot correctly determine its position in space, which is why the screen does not light up, but the device works.

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

The main function of the proximity sensor is to automatically turn the backlight on and off during a conversation. This significantly saves battery power and prevents your cheek or ear from accidentally pressing the touch screen of your device.

When an Android gadget does not go off during a call, the error should be looked for in the operation of the sensor. The following reasons are identified:

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

Before using software troubleshooting methods, you need to wipe the screen. Here, special care should be taken to remove the top part where the proximity sensor is located. If there is glued glass or film on the display, over time they can lose transparency, which will interfere with the sensor.

Increase

You also need to check your call settings. There is a possibility that their parameters are set incorrectly, and the sensor is simply turned off. This option is not available on all smartphones, but it is still necessary to check.

Open the settings, go to the “Options” or “My Devices” menu.
In the “Calls” section, you need to make sure that the checkbox next to the “Proximity sensor” line is checked.

Increase

The user must ensure that there is enough RAM installed in the system for the sensor to function properly. To do this, open the list of applications in the settings and in the “Running” section we check how much RAM the gadget uses. If a shortage is detected, we shut down unnecessary applications.

Android screen goes blank during a call

There are problems with the proximity sensor in Android devices when the screen immediately goes black during a call. It happens that the screen goes blank and does not turn on when making an outgoing call or answering a call.

The contactless sensor has several functions, the most important being automatic backlighting and dimming of the display during a voice call. This is done by detecting that the smartphone is positioned close to the user's face.

When the gadget approaches your ear, the sensor detects this and turns off the screen to prevent accidental disconnection of the conversation and to save battery power. When the user removes the device from the ear, the screen lights up, after which you can mute the call or use other functions (switch the conversation to the speaker, turn on the numeric keypad, etc.).

First, you need to remove the tempered glass or film from your smartphone. In some gadget designs, they cover the sensor, causing an erroneous detection distance. Quite often, the reason lies precisely in the glass - in stores there are many low-quality, cheap products that are not reliable.

If you tear off the tempered glass, the normal functioning of the sensor can be restored. This method may seem ridiculous to some, but just look at how many complaints there are on the Internet about problems with this sensor that arise after gluing such glass.

In some cases, the problem can be resolved by updating the software. For example, some applications promote sensor deregulation. In this situation, you can use a free application that will calibrate the sensor in several steps. This function can be performed by the Proximity Sensor Reset utility.

Working with this application is not difficult. The settings wizard will guide you through the entire process, and at the end you need to confirm the new calibration, after which the gadget will reboot. Then you should check whether the calibration was effective and whether the phone screen now turns off during a call.

If the warranty period of your gadget has already passed, other solutions have not yielded results, and the sensor itself is physically damaged, then you can disable the screen turning off during a call. The screen won't stay on all the time when you're on a call, and you'll be able to use on-screen buttons to eject the keyboard or activate speakerphone.

The downside of this solution is the constant conversation with the illuminated screen, which is why you can accidentally press the buttons. To disable the proximity sensor, you need to download a special Xposed Framework module. This process can only be performed if you are rooted, which provides administrative privileges.

Some owners of Android devices are helped by cleaning the speaker grill if there is a motion sensor there. To do this, take a small brush and carefully clean everything.

There are a lot of questions on the Internet about the Sony Z3 Compact phone; it is on this phone that the screen very often goes blank during calls. Many users manage to solve this problem by pressing on the upper right corner (the sensor is located there).

There are cases when on the Xperia Z3, when you press hard on the top of the screen, you hear a click inside. After this the problem disappears.

Some gadgets have an intelligent processing option in the call settings. If you find it, you can try disabling the option. In Sony phones, the screen often peels off from the body, which is why a similar problem arises. This can be solved by careful gluing.

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.

Android screen problems after sleep mode

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

Moisture getting inside the housing.
Mechanical impact.
The power button is not working properly.
Problems with the firmware.
Lack of RAM.

If the smartphone does not turn on, but vibrates when there is an incoming call or performs other actions, then there is a possibility that the problem can be solved without visiting a service center. It is necessary to clear the RAM of unnecessary processes by shutting down unnecessary applications. If this does not have an effect, make a backup of important information and reset the system settings to the factory state.

The proximity sensor in a smartphone, including the iPhone, performs a function such as turning off the screen during a call. The function is activated the moment it comes into contact with something opaque. When a person makes or answers a call, that something is the ear. Today we will talk about why the screen does not go off when talking on the phone and what you can do in this case yourself, without the help of a specialist, including how to check the proximity sensor.

Most often, the proximity sensor in a smartphone loses its functionality after replacing the touchscreen. In order to solve this problem, just stick a small piece of tape in this place and paint over it with a dark marker, preferably black. This method has been tried many times and has always been effective.

Instead of tape, you can use a rubber band. Cut a piece about 5mm long and place it between the light and distance mechanisms. This method, as experts and ordinary people note, also helps solve the problem when the function of turning off the display on the iPhone does not work as expected when you approach an opaque object.

Of course, in order for the distance sensor to be accessible for repair, the device will have to be disassembled, at least removing the display module. The Internet is full of instructions on how to do this for owners of iPhones of different models. First, read through it so as not to make any mistakes or spoil a valuable spare part. Screens are very fragile and, if removed incorrectly, turn into a pile of glass shards.

As a rule, the distance sensor does not work after replacing the display if the procedure was carried out by people who are not familiar with all the intricacies of opening and repairing the iPhone 5 and other Apple products. Therefore, to replace the display on an iPhone, it is best to contact real professionals in their field, specialists in whom you are 100% confident, preferably an official service center.

In addition, only there you will receive a guarantee for work and spare parts that lasts several months, unlike private service providers who limit the warranty to 2-3 weeks.

Transparent protective film or glass

In addition to replacing the touchscreen, the situation when the iPhone's proximity sensor does not work can be caused by a protective film or glass. To be more precise, its dark shade. Due to the shading, the distance sensor, although fully functional, will not respond. The solution to this problem is to remove the protective film or glass and replace it with another, transparent one, which is quite logical.

There are a huge number of similar accessories on the market now, so there shouldn’t be any problems choosing the right one. The main thing to remember is to take only transparent protective glass!

It should be noted that if you put a protective film or dark-colored glass on your iPhone for a long time and there were no such problems before, then most likely the sensor on the phone has failed for another reason. In this case, it is strongly recommended to contact a specialist.

Phone recovery

If it is not a matter of replacing the touchscreen and dark protective film or glass, then the sensor may not work due to failures in the operating system. Therefore, before going to the official service center to repair the iPhone 5 or any other gadget from Apple, we try to reboot. This is very easy to do - look at the picture and press the marked buttons.

In order to reset all errors in the software, you need to format the phone. You can do this using iTunes. Read and see how exactly the procedure is performed in this article.

Repairing the cable

A situation where the screen does not go dark, in addition to everything that was mentioned above, can be caused by the breakdown of a cheap spare part called a “cable”. Fixing this is not particularly difficult, but skill and experience are required. This process can be divided into the following stages:

Disassemble the iPhone, remove or disconnect the battery.
Pull out the speaker and the connector that is used to secure the headset.
Take apart the key called “Home” by unscrewing the screws one by one.
If there are traces of corrosion on the parts that come into contact with the cable, then carefully clean this area. A cotton swab dipped in an alcohol solution is suitable for this.
Reinstall the parts.
Turn on the iPhone and check the proximity sensor – whether it works or not.

Remember that the cable is very fragile and can be damaged with literally one careless movement. Therefore, if you decide to repair it yourself, then do it carefully, without using sharp or cutting objects.

Removing contaminants

The cause of the problem we are considering may also be the notorious dust, which penetrates inside the device when the seal is broken. In order to wipe the phone from the inside, you will need to disassemble the case and carefully, without pressing, wipe the circuits and case from visible particles of debris.

Disabling a module

If, on the contrary, you are wondering: “How to disable the proximity sensor on an iPhone,” then you can use one of the following methods:

Download the Smart Screen Off app. The program allows you to calibrate and adjust the moments of switching on and off.
Dial the combination “* # * # 0588 # * # *” - a software shutdown method built into the depths of the iOS operating system by engineers.
Disassembling the smartphone and removing the proximity sensor is perhaps the most radical way.

Conclusion

Now you know what to do if the iPhone 5S screen does not go off when talking. The warranty on an iPhone, regardless of the model, is not 1, as many people think, but 2 years. Therefore, if this time has not yet expired, then it is best not to engage in amateur activities, but to seek help from an official service center. They will fix the problem quickly and free of charge. If the module has not failed as a result of drowning or falling of the device.

And finally. You should not buy an iPhone second-hand, since in this case, the cell phone may be a Chinese product assembled from used parts, even if there is documentation confirming the quality. Be careful and careful, read the following article on how to check the authenticity of an iPhone. That's all, see you again on the pages of the site!