The screen does not turn on during an incoming call. The screen remains dark after the call ends. Other causes of failure

06.01.2022

The situation when the screen does not turn on after talking to the iPhone 8 has become an unpleasant surprise for iPhone users. Until recently, the occurrence of such a problem was relatively rare and was solved by installing an update or simply rebooting the smartphone. Now, when the iPhone 8 models have actively filled the market, the frequency of calls with this problem has greatly increased, as well as the number of causes, and hence the solutions. This article will help you understand the problem.

Why the iPhone 8 screen does not turn on:

Mechanical damage. This category of reasons includes both the negligence of the owner himself and the mistakes made during the repair. These are mechanical damage to the display, deformation of the case or moisture ingress. You don't have to drop your phone in water for moisture to cause a black screen. Frequent conversations or operation of the gadget in high humidity, in the rain, splashing the smartphone several times, and so on are quite enough. This category of reasons includes the installation of low-quality components.
Software problems. Due to the fact that the iPhone operating system is becoming more open to third-party software developers, conflicts between the OS itself and installed applications have become more common;
Battery problems. Forgetting to unplug your iPhone 8 from the power outlet when charging after it finishes, you wear out the battery more intensively. This is due to an increase in battery temperature, which can also often lead to a black screen.

What can you do if the screen does not turn on on the iPhone 8:

Due to the variety of reasons why the screen does not turn on after talking on the iPhone 8, there is no single advice that will solve your problem in 100% of cases. As a solution, we recommend:

make sure that your smartphone does not have a beta version of iOS installed. To prevent the installation of test versions of operating systems, we recommend disabling automatic receipt of test builds;
monitor the iPhone charging process and follow the manufacturer's recommendations for using its products in the winter;
refuse to use applications embedded in system programs or be careful in choosing them. Add-ons for iMessage, extensions for Safari, additional applications for third-party keyboards or other programs can cause problems with the OS;
Simultaneous operation of the functions "Raise to activate" and "Open with a finger" can also lead to crashes in iOS. To prevent this, disable one of them in the phone settings;
reset your smartphone to factory settings. The gradual addition of previously used applications from the App Store will allow you to determine the program that led to the black screen;
remove the protective coating (film, glass) or decorative cover.

If the above recommendations did not lead to the elimination of the problem, then in order not to aggravate it, we recommend that you do not take any further actions aimed at “forcing” the screen to turn on. These attempts may cause your mobile phone to stop ringing, become slow, have other problems in its operation, or it will permanently fail.

When you hold your Xperia™ device to your ear during a call, the screen turns off to prevent accidental activation of the touch screen. If the screen does not turn on after you take the device away from your ear, follow these steps.

(Workaround) Press the power button. If the screen does not turn on, press the power button again.

Check if the protective film that was on the screen when you purchased your Xperia™ device has been removed. It is designed solely to protect the screen during transport and can be easily removed.

If you have applied a screen protector to your screen, please make sure it is the correct one for your Xperia™ device model. It is important that the screen protector has holes that align exactly with the proximity sensor and do not block it. To check the exact position of the proximity sensor for your Xperia™ model, see the illustrations in the user guide.

Turn off the device and then turn it back on. This will stop all running applications and free up memory. Sometimes this operation automatically fixes the problem.

To reset your device, perform a software restore using the Xperia™ Companion PC application. Please note that restoring the software will delete all data stored on the device. Content stored on an external memory card, such as photos, videos, and music, is not deleted.
Backing up data using a computer
1. Make sure the Xperia™ Companion app is
2. Connect your device to your computer with a USB Type-C™ cable.
3. On PC : Open Xperia™ Companion if it doesn't start automatically. After a while, the computer will detect the device.
4. Make sure your Xperia™ device's USB connection is set to file transfer mode File transfer .
5. Select Backup on the Xperia™ Companion home screen and follow the instructions.
Restoring software with Xperia™ Companion
1. Prepare your Google™ account username and password. Depending on your security settings, you may need to enter them to restart your device after a software restore.
2. Make sure Xperia™ Companion is installed on your PC or Mac ®.
3. Open Xperia™ Companion on your computer, but do not connect your Xperia™ device until prompted in the fifth step in the Xperia™ Companion window.
4. Select an item Software recovery on the computer screen.
5. Follow the instructions on the screen to reinstall the software and complete the recovery.

In Xiaomi smartphones, the proximity (light) sensor is responsible for automatically turning on / off the display during a call, as well as adjusting its brightness. And if the screen does not turn on after talking on Xiaomi, then the most likely cause of the problem is incorrect sensor calibration or failure.

Solutions to the problem

You can try to fix the problem in the following ways:

Sensor Calibration Instructions

Before carrying out the operation, it is necessary to make sure that the sensor is in good condition. To do this, enter a special code *#*#6484#*#* (the second option is *#*#4636#*#*), which allows you to enter the engineering menu. When you open it, select Single Item Test.

In the window that appears, a significant number of tests will be offered to choose from, and the Proximity Sensor item is selected to check the sensor.

When you start it, you need to close the sensor with your finger. If the inscription "Far" or "Close" appears, then it is working and you can calibrate it.

It involves the following sequence of actions:

Turning off the smartphone;
Hold down the volume up key and the power button. The phone should begin to vibrate, after which it is allowed to release the buttons;
In the menu that opens in Chinese, we find a combination of hieroglyphs 中文, which is usually located in the lower right part of the screen near the Download button (模式). This will switch to English;
Next, you need to select PCBA Test, after which you will go to the engineering menu, in which Proximity Sensor is pressed again;
Next, you need to click on Calibration, put the smartphone on a flat surface and exclude the possibility of bright light hitting it.

The success of the calibration will be indicated by the appearance of the inscription Successfully.

Checking the performance of the sensor

This procedure should solve the problem when the screen does not turn on after talking on Xiaomi. In order to verify the effectiveness of the calibration performed, it is necessary to cover the sensor with your finger. As a result, the number 1 should change to zero on the screen.

If everything is fine, then press the Pass key, which takes you back to the engineering menu, where we select Finish, and then Power Off.

After that, the smartphone starts in the usual way and when making a call, the Xiaomi display, when brought to your ear, should automatically turn on and off.

On your android, when you call, the screen immediately goes blank and turns black? If so, then the problem is most likely with the proximity sensor in the phone.

This problem can appear in any phone, for example, sony xperia, mi xiaomi, lumiya, compact, samsung, asus, xiaomi xiaomi, but it has been noticed that most often the screen goes blank on sony z3.

Moreover, it happens that it goes out and does not turn on - this is no longer a joke. If this happens when answering a call or when making an outgoing call, then most often the culprit is the proximity sensor.

What is a sensor and how does it work in android? The proximity sensor has several functions, but the most important task is to automatically dim and illuminate the display during a voice call.

This is done by determining what is close to your face and phone. When the phone is close to your ear, the sensor detects your head and the screen turns off to save battery and to prevent accidental disconnection of the call.

In turn, when you take the phone away from your ear, the screen lights up so you can end the call or use other features (number pad, switch conversation to speaker, etc.).

When it comes to damage to the proximity sensor, the mechanism described above stops working, so the phone cannot infer whether it is currently close to the face.

The problem with the proximity sensor usually manifests itself in the fact that the screen immediately turns off during a call and lights up only after a call, or vice versa - the screen does not turn off even if you put it on your face during a call.

Causes of problems with the proximity sensor when the screen goes blank during a call

The problem with the sensor can occur both in software and in purely mechanical damage.

If the problem is software related, you can often fix it yourself.

For example, by recalibrating the sensor, by restoring the phone to factory settings, or by reinstalling the software.

If the problem was the result, for example, of the phone falling, then there was probably mechanical damage to the sensor.

Often this also happens when there is a "tear-off" from the top of the case to the bottom of the phone (particularly on the Sony Xperia).

Of course, purely mechanical problems are best dealt with by sending the equipment in for service, because replacing the sensor is not easy.

The first solution is when the phone screen goes blank with an incoming call - remove the film or glass

First of all, remove the film or tempered glass from the phone screen. In some smartphones, due to their design, they may cover the sensor and cause an erroneous detection distance.

Very often, glass can also be the cause of problems with the proximity sensor - you can find tons of very cheap, low-quality products in stores that are not reliable.

By tearing off the tempered glass, you can restore the normal functioning of the sensor.

Of course, for some this may seem ridiculous, but uncle Google or Yandex will give you hundreds of records from their “warehouse”, where users complain about problems with the proximity sensor after gluing poor quality glass.

The second solution if the phone screen goes blank when answering a call is calibration

Sometimes the problem is a software update, for example, which for some reason contributes to the deregulation of the proximity sensor.

In this case, you can use a free application that, when installed in several steps, can calibrate the sensor, such as Proximity Sensor Reset.

Using it is not difficult - a wizard will guide you through the entire process, and at the end you must confirm the new calibration, which will reboot the phone.

After that, you can make sure that the calibration helped and now the phone screen does not turn off during a call.

The third solution when the phone screen goes blank during an outgoing call is restoring factory settings

Another option you can try is a factory reset on your phone.

Unfortunately, this option deletes all data from the phone, so be sure to copy files, photos, music, videos, contacts, SMS, and others to a safe place.

Then go to "Settings > Backup & Reset" and select "Factory Reset".

Depending on the brand and software version installed, the factory settings may also be located elsewhere.

After confirmation, the phone will reboot and all data will be deleted and the device settings will be reset to factory defaults.

When you turn on your phone for the first time, you need to re-enter the settings (language selection, sign in to your Google account, etc.).

After the operation is completed, make sure that the screen works properly during a call and does not turn off.

Fourth solution if the phone screen goes blank - turn off the sensor

If your phone is no longer under warranty, and all other solutions have not worked, then the sensor is probably physically damaged, so that the screen goes blank immediately after starting a call.

If you do not want to spend money on service, then turn off the screen off during a call.

As a result, the screen will be constantly lit during a call, and you can use the on-screen buttons to activate the speakerphone or remove the keypad.

The disadvantage of this solution is that when we speak with a lit screen, we can accidentally press the buttons.

In order to be able to disable the proximity sensor, you will need to install a special Xposed Framework module.

To do this, you need to get ROOT () to get administrative privileges,

Phone Screen Still Dimming - A Few Proven Tips

Some owners were helped by the option of cleaning the speaker mesh. Sometimes there is a motion sensor. Take a small brush and gently clean everything - it will help you too

Judging by the reviews, most often the screen goes blank when making calls on the sony z3 compact phone. Many people managed to solve this problem by pressing on the upper right corner (there should be a sensor there).

There are cases that on the Xperia Z3, with strong pressure on the top of the screen, even a click is heard inside and the problem disappears.

In some smartphones, there is an intelligent processing option in the call settings - try turning it off if you find it.

For Sony phones, the screen very often peels off from the case and such a problem arises - careful gluing solves it.

You can also disable the incall ui application in the application settings. If this does not help, then in the notification settings, try turning on notifications for this application.

Of course, other reasons are not ruled out, but I end here. As they say, than he could, he helped. Good luck.

Hello! The problem, voiced in the title of the article, appears on Apple phones with "enviable" frequency. The last time I remember it was in 2014. And now we are stepping on the same rake again. What is the essence of the problem? Yes, everything is very simple ... During an incoming call on the iPhone, the phone's screen should light up and prompt you to answer the call. Yes, sometimes it’s impossible to “pick up the phone” the first time and the display does not respond (), but it must show something!

However, after a recent firmware update, something strange happens periodically. The iPhone rings and vibrates, but the screen is black and there is no way to answer the call. There is also no reaction to pressing the Home button. And this is terribly annoying - after all, no information is visible!

Moreover, at first glance, it is impossible to identify a pattern - it can “normally” receive calls for a week, and then “hang” several times during the day with a black screen when incoming.

The most important thing. With a high degree of probability, this problem is in no way connected with hardware and other mechanical damage. The same proximity sensor (which one might think of as a malfunction) starts to work only after answering the call. And we can not answer - our screen does not even light up. So the reason is most likely in the software or some external factors. And this is good.

And now, no less important - how to deal with all this. And let's start with what Apple technical support advises. And she, judging by the messages on various resources, recommends:

via , do not restore from a backup and observe the behavior of the device. In principle, this is their standard recommendation.
Visit an authorized service center. The most interesting thing is that I managed to stumble upon a case when a person's phone was changed under warranty due to a similar problem. I don’t know if it was only the black screen during the call that caused the replacement or the ASC employees found some other defect, but the iPhone was replaced. But the most interesting thing is that everything repeated on the new device - this once again confirms our statement that the "breakdown" is exclusively in iOS.
Wait for the engineers to fix the problem - they know about it, they are very sorry and will fix it soon.

Here are three scenarios. By the way, hold on, you can contact them yourself - suddenly they will advise something else sensible?

For those users who, for some reason, are not satisfied with the advice above, there are a few more “folk” ways to deal with the lack of an image on the iPhone screen when a call comes in:

As you can see, there are really a lot of options, but it’s impossible to single out the only valid one among them. Judging by the messages of users, one thing helps everyone. Or maybe a combination of several actions.

Think everything? And here it is not. Finally, one more tip that works great in my case. As we know, there are two different ways to end a call on iPhone:

Press the "off" button.
Press "hang up" on the screen.

So, after I stopped disconnecting the connection using a mechanical key, and began to download the conversation exclusively by pressing the red button on the screen, all problems disappeared.

Whether this is due to the fact that before that I performed many of the methods that I wrote about above - I don’t know. But there is a fact - I still do not observe a black screen with incoming calls.

Of course, we'll hope that Apple fixes this annoying software bug in the next firmware update. But if this does not happen, or if it happens again after some time - you know how to act :)

P.S. If you also encountered a similar problem - be sure to write in the comments. Or maybe there are only a few of us and I’m slandering Apple in vain?

P.S.S. As I already wrote - it's a pity that the iPhone can not answer the call with the buttons. It would be really very cool - "like" for such an option! :)