The phone screen turns on periodically. Using the special application “Touchgreen Calibration”

Facebook

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

Main function proximity sensor is automatic switching on and turning off the backlight during a call. This saves battery power and eliminates accidental press ear or cheek on touch screen 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 protective film or cover).
Lack of RAM.
Problems with the firmware.
Moisture ingress.
Mechanical impact and damage to the cable or other components.

Before you start programmatically To resolve the problem, wipe the screen thoroughly. Special attention Pay 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.
Incorrect work power buttons.
Mechanical impact (impact, fall).
Moisture getting inside the case.

If the phone does not turn on but vibrates when incoming call or performing other actions, there is a high probability that the problem can be fixed without contacting a service center. Clear RAM from unnecessary processes, completing unnecessary work in this moment 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 reflash the device. It is important not to forget to make a backup copy before each serious operation to interfere with Android.

Greetings! The display on your phone turns on spontaneously - this problem can drive anyone into hysterics. It would seem that, simple thing- Well, it lights up on its own, so what? However... so many inconveniences at once! The main ones include very fast charging iPhone. The smartphone doesn’t hold much charge anyway (look at the approximate data and compare with your own indicators), and then there’s the main consumer of energy - the display, which turns on when it wants. Horror!

It is immediately worth noting that similar problem there are three main reasons - it could be fault software, telecom operator or hardware failure. Yes, it's as simple as that. But this is only at first glance. And on the second...

In general, let's quickly find out how to deal with all this disgrace? Let's go!

Raise to Wake feature and other software “features”

In iOS 10 for iPhones starting with the 6S, 6S Plus and SE models, the Raise to Wake feature began working. When activated, the moment you pick up the device (lift it from any surface), its screen lights up on its own. This is done for ease of unlocking - you just have to put your finger on the touch sensor ID.

So if you are complaining that the screen on your iPhone turns on by itself only the moment you pick it up, this is the effect of this option.

In some cases, the Raise to Wake option may not work perfectly; try not lifting it from the surface, but simply shaking the locked iPhone - the screen backlight will light up. A similar situation can occur when the phone shakes violently, for example, in a pocket.

Therefore, if this is relevant for your phone model, turn off this function and check whether the automatic backlight switching on has disappeared? For this:

Done? Have you checked? Nothing has changed and the backlight can still flash on the screen at any time, despite the fact that the phone is locked? There are a few more software features, which may cause the display to behave this way. Here's what you can do:

Check applications and games installed on iPhone. Perhaps it's just some kind of "bug" separate program. For example, a notification should come from her - the screen lights up, but nothing comes.
Jailbreak. Check all tweaks that were installed or updated during Lately. Delete one at a time, starting with the most recent one. But in general, it is better to remove the jailbreak itself.
, but (important!) do not recover from backup copy. See if the screen stops flashing on its own on a completely “clean” device.

But all this may be meaningless, because there is a chance that the “root of evil” is located in a completely different place - from which you would not expect such a “set-up” at all... the SIM card.

The screen on the iPhone turns on by itself - is the SIM card to blame!?

In fact, it’s easy. To be more precise, this is not the fault of the SIM card itself, but of the entertainment services connected to it. This is especially true if the SIM card is new - just purchased or replaced. Moreover, each operator has one such option, which shows on the display with some frequency various information- thereby activating it for several tens of seconds without your knowledge.

But similar information messages do not always appear. In some iPhone cases will simply turn on the screen, but there will be no text on it.

Here are the options you should pay attention to first:

Beeline - "Chameleon".
MTS - "MTS news".
Megaphone - "Kaleidoscope".
Tele2 - “Tele2 theme”.

It is these services that cause the display of your phone or tablet to turn on periodically. Yes, for iPad it will work the same as for iPhone. For example, on my iPad with new SIM card MTS constantly lit up a black screen with the text “Sim card has played sound.”

I turned off MTS News and everything went away.

Be sure to turn off these services (this can be done either through your operator or special teams) - the “calmed down” screen backlight and battery will thank you.

The display lights up by itself - problems with the hardware inside the iPhone

Perhaps the saddest option. And you have to be sad because it is impossible to identify one single reason. There is no way to tell - the locked display is activated from time to time only because of the battery.

There can be a lot of options, and the battery is far from the only one:

In the case when this happens during charging, it is worth checking the power supply, cable and wire connector on the iPhone. You should try replacing the adapter and Lighting cable, but carefully clean the connector - perhaps it has oxidized or dust has clogged up there. You can clean it with a brush or toothpick (no metal objects!).
If, in addition to the fact that the screen lights up on its own when locked, the device (when it is completely turned off) also turns on on its own, then you should look towards the top cable with the power button.
You also need to pay attention to the bottom connector and Home button(especially if moisture got there).
And of course, low-quality spare parts and unprofessional repairs can cause such behavior iPhone display or iPad.

And much, much more. Only good specialists will be able to more accurately determine the cause of hardware problems. service center when carrying out diagnostics. Good, this procedure almost always free. But I still really hope that your problem, dear reader, will be resolved in some way from the first two points of this article, and the matter will not come to repair.

Every year, manufacturers release dozens of new smartphone models. Some as distinctive feature can boast of being cheap, others have high performance, others have an ergonomic design, others are endowed with excellent energy-saving characteristics, powerful battery and impact resistance. But none of these devices can be 100% protected from breakdowns of various types. One of these troubles is the spontaneous activation of the touchscreen, which is usually typical for Chinese budget smartphone models. Why the sensor on the phone is pressed by itself and how to deal with this problem, you will learn from the article.

Incorrect operation of the touchscreen is not the most pleasant thing, but the problem can be fixed

Conventionally, the reasons why the sensor itself is pressed can be divided into two categories:

Software failure - occurs due to errors in the software (software) of the smartphone;
Hardware failure - errors associated with damage to the component parts of the device.

Depending on the model of your smartphone and the circumstances under which the screen malfunctioned, you can be more or less likely to say which of the above failures caused this problem. Yes, in Chinese budget models(according to statistics, most often in Alcatel and Xiaomi) improper functioning of the touchscreen occurs as a result of low-quality assembly of the device and a cheap resistive display, which, as is known, is vulnerable to the accumulation of static charge on its surface. Dropping a smartphone or pressing hard on its screen can also cause problems with the operation of the touchscreen.

However, there is no need to despair. Before claiming that screen operation errors arose due to hardware damage, you should try to fix this problem using software methods. Let's take a closer look at them.

How to eliminate spontaneous sensor activation programmatically

So, let's look at several ways to solve this problem on our own.

Method 1: Reset your smartphone to factory settings

Depending on the smartphone model, restoring the “default” operating parameters is performed in a certain section of the settings. However, the path to them is the same for most devices; only the names of these blocks differ. Therefore, let's look at how to reset the settings to factory defaults, using an example Philips smartphone S326.

Method 2: Screen Calibration

Re-calibration of the touchscreen may be necessary not only in the event of a software failure, after which the sensor on the smartphone clicks on its own. After the fall mobile device from a height, falling into water, replacing the display, etc. calibration must be carried out - this can help in most of the cases listed here. Let's consider two methods that allow us to carry out this procedure.

Screen calibration using standard tools built into the smartphone

In those device models that have standard functionality the ability to determine the angle of inclination of the touchscreen; it can be calibrated without using special utilities. For this:

Go to the “Settings” section of our device;
In the “Display”, “Screen” or “ Special abilities» find the item “Calibration” and click on it;
The next window suggests, as a rule, to place the phone on a flat surface and start the calibration procedure, then your device will automatically adjust the optimal touch angle and complete it.

Using the special application “Touchgreen Calibration”

The the method will work for those whose smartphone models do not have built-in screen calibration tools. The application compares favorably with similar ones, first of all, due to its ease of use, as well as the very high accuracy of determining the angle of the sensor.

So, to calibrate the screen using Touchscreen Calibration, need to:
Download the application from the link at Google Play— https://play.google.com/store/apps/details?id=redpi.apps.touchscreencalibration ;
After installation, we launch the program, in the start window we see the inscription “Calibrate” framed in a blue background, you need to click on it;

Click on “Calibrate” to begin the touchscreen calibration process

The calibration procedure begins, during which you will be asked to adjust the screen tilt angle in six different touch modes, we go through each of them;

Do not forget that the smartphone must be on a flat surface all this time for the calibration to be as accurate as possible.

When finished, you will be prompted to reboot your device for the changes to take effect.

Here click “Ok” and reboot the device for the changes to take effect

Conclusion

If the methods described above did not help you fix sensor clicks, then the problem most likely lies in the hardware of your smartphone. There are several hardware reasons due to which the touchscreen may operate spontaneously:

Resistive display - this type screens differ from capacitive screens in that they are a layer of glass on which a flexible membrane is applied; as a result, such a touchscreen quickly wears out;
Poor quality double-sided tape - Chinese manufacturers, and some service centers that repair displays by replacing them like to save on double-sided tape, which is used to fix the screen inside the case. As a result, the touchscreen does not work properly.

For the above reasons, it is better to entrust the matter to a specialist than to try to repair the screen yourself. If you still want to do it yourself, I recommend viewing these guides on touchscreen repair:

In this article I will talk about the reasons why the screen/display on your phone does not work, and what to do in this situation.

Let's start in order.

First steps and theory

The development of the mobile industry has taken the direction of increasing the size of the display and minimizing the number of mechanical keys. The screen is the main way you control your device, and damage to it can turn your phone into a useless pile of metal. There are many options for the screen to malfunction: from the appearance of small spots and defects to its complete inoperability.

Each breakdown is unique and requires separate consideration. You must be sure of the reason for the inoperability, otherwise dishonest service workers may profit from you. First of all, you need to make sure that everything is in order with the software part of your device. To do this you need:

Connect to device Charger, let the battery charge a little
Turn on your device. Connect your mobile phone to your computer

If synchronization is successful, but no changes occur on the screen, the problem is in the components. Let's look at the main causes of screen malfunctions. mobile phone and explain them.

Phone screen not working due to mechanical/physical damage

Every smartphone crash is a kind of lottery; everyone is lucky differently. One mobile phone may be left without a single scratch if dropped from a great height, while another may be damaged if it accidentally collides with a hard surface.

Mechanical damage is easily diagnosed with the naked eye. A growing crack, and often a “cobweb,” appears on the phone screen. There can be several outcomes in such a situation:

Damage to the protective glass and stable operation of the device
Image display but sensor damage
Complete breakdown screen

Replacing damaged protective glass depends on the device. Modern models are equipped with combined screens with a sensor and protective glass, which allows for minimal thickness. Replacing such components is expensive and requires replacing not only protective glass, but also other components. The same principle applies to a damaged sensor.

If the protective glass is damaged, but the screen works, this is not a reason to continue using it. this device. It is recommended to urgently contact a service center, because your phone becomes vulnerable to moisture and liquid, which can cause more damage. serious damage.

The phone did not fall, but the screen does not work. Causes of failure

Loss of functionality of a mobile phone screen may be associated not only with mechanical damage outside of the display. Moisture ingress, breakdown of the screen control chip, wear or disconnection of the cable and other reasons depending on specific model, may result in the phone screen not working.

Moisture and liquid entering the phone body

Everyone knows from an early age that water has no place in electronics. If moisture or liquid gets into the phone, it will destroy the contact board. short circuits and other critical phenomena that impair the performance of the device.

Destruction of contacts on the board may require both routine cleaning and replacement of many components. If water gets into the device, it is recommended to immediately contact a service center for help. Water getting into the screen of a mobile phone can cause characteristic streaks and stains, which can be corrected by replacing the screen or modules.

Screen control chip failure

Failure of microcircuits in a device is not uncommon. The screen does not receive necessary information from the device and does not display the image. Identify this problem regular means impossible, it will be determined at the service center. Damage can only be corrected by replacing components.

Worn or disconnected cable

The cable connects the mobile phone screen to the device and is replaceable. This solution allows you to quickly replace the screen without interfering with the device board, but adds the possibility of detachment upon impact. Connecting the cable will not take much time and will not hurt your pocket.

Cable wear is typical for flip phones and sliders. In such devices, constant physical contact is created when opening and closing, which over time causes the loop to faulty condition. In such cases, the cable is replaced at the service center and does not require the purchase of a screen module.