The screen does not light up when there is an incoming call. Black screen when there is an incoming call on iPhone - why doesn’t it light up? Problematic software

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.

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

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.

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

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

However, after a recent firmware update, something strange happens periodically. The iPhone rings and vibrates, but its screen is black and there is no way to answer the call. There is also no response 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 may be possible to receive calls “normally” for a week, and then “freeze” several times during the day with a black screen when receiving incoming calls.

The most important. With a high degree of probability, this problem has nothing to do with hardware or other mechanical damage. The same proximity sensor (which one might think was faulty) starts to work only after the call is answered. But we can’t answer - our screen doesn’t 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, is how to deal with all this. Let's start with what Apple technical support advises. And she, judging by messages on various resources, recommends:

1. through, do not restore from a backup and observe the behavior of the device. In principle, this is their standard recommendation.
2. Visit an authorized service center. The most interesting thing is that I came across a case where a person had their phone replaced under warranty due to a similar problem. I don’t know whether it was only the black screen during a call that caused the replacement or whether the ASC workers discovered some other defect, but the iPhone was replaced. But the most interesting thing is that everything happened again on the new device - this once again confirms our statement that the “breakdown” is exclusively in iOS.
3. Wait for the engineers to fix the problem - they know about it, they are very sorry and will fix everything soon.

Here are three options for the development of events. By the way, keep it up, you can contact them yourself - what if they recommend something else sensible?

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

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 user reports, one thing helps everyone. Or maybe a combination of several actions.

Think everyone? But no. Finally, one more tip that works great in my case. As we know, you can end a call on iPhone in two different ways:

1. Press the “off” button.
2. Press "end call" on the screen.

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

Whether this is due to the fact that before this I performed many of the methods that I wrote about above - I don’t know. But there is a fact - I have not yet seen a black screen for incoming calls.

Of course, we hope that Apple will fix this annoying software glitch in the next firmware update. But if this does not happen, or it happens again after some time, you know what to do :)

P.S. If you also encounter a similar problem, be sure to write in the comments. Or maybe there are only a few of us and I’m wasting my time talking about Apple?

P.S.S. As I already wrote, it’s a shame that you can’t answer a call using buttons on the iPhone. It would be really very cool - “like” for such an option! :)

Quite a large number of phone users encounter a problem when During a call the phone screen goes blank, and nothing can be done. At this moment, the buttons do not work, including the power button, the sensor does not respond to any actions, and the only way to return everything to normal is for the other end to pick up or hang up.

In most cases, this problem is related to the proximity sensor. But there can be quite a lot of problems with it.

I came across such problems, I didn’t really read about them until I had such a problem myself, twice. For the first time, this problem appeared with a Chinese copy of Samsung S5. Second time with Xiaomi Mi4. No, it's not about Chinese phones, it just happened that way for me. When I looked for information on why my screen goes blank during a call, I did not find such problems with Chinese replicas. As a rule, these were factory Samsung, HTC, Nokia, and rarely Sony. I did not find any mention of the screen going dark during a call on Chinese phones. And this really confused me, since many people advised flashing the device, but it’s difficult to flash a Chinese device.

However, after moving from phone user forums to technical forums, I concluded that the problem was not with the firmware, but with the proximity sensor. A proximity sensor is installed on any modern phone. Its main function is that when it detects obstacles at a certain distance (the obstacle is your cheek), it turns off the screen to save energy, and also locks the buttons so that during a conversation you do not accidentally press unnecessary buttons with your cheek or fingers. After you have talked and removed the phone from your ear, the sensor detects that there are no obstacles and unlocks the phone for further use. This is in simple words. And when any problems happen with the proximity sensor, the screen goes blank during a call and you can’t do anything.

Typically, such problems happen for several reasons.

The first reason is due to repaired phones. Non-certified centers, and many private traders, forget to put the elastic band on the sensor, or put it on crookedly, as a result of which, in the first option, the sensor dangles freely and ends up in dead zones under the plastic; in the second case, the rubber band blocks the proximity sensor. In these cases, the best option is to take the phone back to the would-be repairman and force him to do everything right. You can try to disassemble it yourself, but I’m not a fan of disassembling devices that don’t have bolts.

The second reason is that the glass near the proximity sensor does not fit tightly. As a result, the sensor “hits” the edge of the glass, and seeing an “obstacle” blocks the system. This situation can arise at any time, starting from the purchase of a phone, during its operation, and ending with a fall or impact. This is exactly the problem that was in the Chinese replica Samsung S5. I was advised to take it to a workshop, where they would solder the tap to the body for 1000 rubles. This is exactly what my friend did, with the real S5 (it turns out that this is a common problem with this model), but they warned that after this the phone would not be presentable, but the screen would no longer go dark during a call. The basis of the method is that the glass is pressed, the plastic above it is melted with a soldering iron, and the plastic, having melted, creeps onto the glass. As you understand, after this there will be a “scar” on the phone. This method did not suit me, and I decided to try another one, which cost me 76 rubles. I just bought Super Moment. I took plastic from the Super Moment packaging, plastic is needed so as not to absorb glue. I dropped a drop of glue onto the cardboard from the same package of glue. After that. I touched this drop with plastic. There is a small amount of glue left on the plastic. after that, I ran this part of the plastic along the protruding rear part of the glass and pressed it. After a minute, he let go and checked his phone. The phone worked great and the screen stopped going dark during a call. All this can be seen in the video at the end of the article.

Why did I do this particular algorithm? Just the laws of chemistry and physics, as well as the desire not to spoil the appearance of the device. If I had used paper or cardboard, the glue would have soaked in and I would have barely applied anything. If I dropped a drop on the place where the glass leaves the body, the drop would seep under the glass, where it could stain or glue the internal parts, and from above it would spread, albeit over a small part of the glass. And this is a “blot” that you cannot get rid of, and accordingly, the appearance is ruined. Also, when pressing, all the excess glue would have to go somewhere, and this is only the inner part, or the top part of the glass. In my version, the plastic from the packaging took exactly as much glue as I touched. Clay took up the area that should have been occupied. After I began to lead, the end of the glass took only as much glue as the area of ​​​​this glass could accommodate. By analogy with water, when you put something under a stream from a faucet, and the water begins to flow exactly over this area (of course, if you have not turned on the full pressure). Therefore, the glass took exactly as much glue as was enough for its area, and nothing extra.

We will talk about the third option for the screen to go dark during a call in the next article, on.

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 an outgoing call is made or when a call is answered.

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.