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 fixedWhat are the reasons behind the spontaneous operation of the touchscreen?
Conventionally, the reasons why the sensor itself is pressed can be divided into two categories:
- Software failure - occurs due to software errors ( software) 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 a mobile device falls from a height, falls into water, replaces 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 the ability to determine the tilt angle of the touchscreen as standard functionality, you can calibrate it 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, you need:
- 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 of screen differs from capacitive ones in that it is a layer of glass on which a flexible membrane is applied; as a result, such a touchscreen wears out quickly;
- 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:
I'll tell you right away what I have SONY Xperia SP on Android 4.3, but the recipe for brakes can help owners of other phones.
A little about the brakes
I bought my phone at the end of 2013, and although it is already old by the standards of the phone market, I am quite happy with it.
But not everything is so good, the phone starts to slow down a lot over time. And sometimes, just to make a call, you have to watch the strongest lags for 10-15 seconds. There are times when it is easier to reboot the phone than to wait.
Cleaning your phone and Hard Reset
I already wrote as much as possible, you can start with this, but such cleaning did not help my phone.
I also wrote how to do it, but after full reset telephone need to be reconfigured and reinstall the necessary applications.
And when the lags became so bad that it was necessary to do a Hard Reset again, I decided to disable applications which take up the most memory. And I saw that my Android stopped slowing down, at least it started working normally.
Disabling Google Search
Turning off the service helped me " Google Search"The phone started working just fine, the lags are gone at all! I don’t know the problem is in the SONY firmware or in the Google search itself, but this really helped.
What do we have to lose?
Disabling the Google service means it will stop working voice search And Google Now , of course, these are convenient applications, but it’s better without them than with brakes. No way to disconnect will not affect regular search in the Google Chrome browser, will only stop working voice input and voice search!
Disconnection instructions
If you have made a decision and are ready to disable Google search, then take these steps:
Go to Settings - Applications, for me the “Downloaded” tab opens by default, on other phones the order may be different, look for the “All” tab (scroll to the right) 
To make it easier to search, we sort applications by size and look for an application with the name "Google Search"(may be called “Google Search”) and click on it. Here we have it stop, turn off, additionally erase data And clear cache.
Before checking, I recommend restarting your phone.
What if the phone is still slow?
Disabling search helped remove the brakes on my phone. If disabling search does not solve the problem try disabling other "fat" applications.
Write in the comments whether disabling search helped or not?
There are a number of ways to correct touchscreen sensitivity, sensitivity, unpredictable response, or unresponsiveness to touches.
If you have applied a protective film to your device's screen, make sure it fits snugly and that there is no dust, air bubbles, or water underneath it.
- Remove the micro/SIM card holder cover.
- Using the tip of a pen or similar object, press and hold the power button.
- After the device vibrates several times in short intervals, release the power button. The device will turn off automatically.
- Press and hold the Power key until the phone vibrates.
- Wait until the device starts up.
If you are not wearing gloves, make sure Glove Mode is turned off.
Disabling Glove Mode
- Go to your Home screen and tap.
- Find and tap Settings > Display.
- Drag the slider next to Glove mode .
If the problem occurs while charging, please make sure that you are using a genuine Sony charger or USB cable, designed to charge your device. Other charging device may negatively affect the operation of the touch screen.
If you have a memory card, remove it and restart the device. If this resolves the issue, your SD card may be damaged. In this case, you will need to replace it on your Xperia™ device.
Use Safe Mode to find out if downloaded apps are causing problems. In Safe Mode, the device boots with the software and applications that were installed when you purchased the device. If your device performs better in Safe Mode, it's likely that one or more apps are negatively impacting your device's performance. You can get out safe mode and restart your device to remove the apps causing the errors. If the problem is recent and you're not sure which app might be causing it, try uninstalling the last app you downloaded first.
Enabling Safe Mode
- Turn off your device.
- Press and hold the Power key.
- When the Xperia™ logo appears, release the Power key, then press and hold the Volume Down key until Safe mode .
To exit Safe Mode, restart your device.
Removing an app from the Apps screen
- Touch and hold anywhere on the Apps screen until your device vibrates. All applications that can be removed are marked with an icon.
- Select the app you want to remove, then tap UNINSTALL.
Run a quick test to quickly check how the touchscreen works on your Xperia™ device.
Running the test
- Find and tap Settings > Support.
- Click the Tests tab, and then select a test from the list.
- Follow the instructions to complete the test, then tap the check mark icon or notification icon depending on whether the test passes or fails.
To reset your device, perform a software restore using the Xperia™ Companion PC app. Please note that restoring the software will erase all data stored on the device. Content saved on external map memory such as photos, videos and music are not deleted.
Backing up data using a computer
- MacOS
- Connect your device to your computer using a USB cable.
- On your computer: open Xperia app™ Companion. After some time, the computer will detect your device.
- Select an item Backup on the main screen.
- To execute backup, follow the instructions on the screen.
Restoring software using Xperia™ Companion
- Make sure Xperia™ Companion for or Mac OS is installed on your PC or Mac®.
- Open Xperia™ Companion on your computer and click Software recovery on the main screen.
- Follow the onscreen instructions to reinstall the software and complete the recovery.
Touch screen performance may be affected by dirt, high temperatures, or the use of cases or screen protectors.
Remove any protective covers from your device to make sure they do not interfere with touchscreen operation.
Wipe the screen with a clean, dry cloth. Use the touchscreen with clean, dry hands.
Overheating your device may impair touchscreen performance. If your device is overheating, allow it to cool and then check the touchscreen operation.
Turn off your device, and then turn it on again. This will stop all running applications and free up memory. Sometimes this operation will automatically fix the problem.
If your device doesn't respond or won't restart, you may need to force a restart or shut down the device. In this case, settings and personal data will not be deleted.
Forced shutdown of the device
Turning on the device
For changing push-button phones Touch devices have arrived. What has changed since this technology became firmly established in our lives? Almost everything that is in any way related to the functioning of the device. That is why a situation in which the sensor stops working requires immediate resolution. Moreover, in many cases a person has almost every chance of restoring his device. We'll talk about this in more detail later.
Why did the sensor stop working?
There are quite a few reasons why the sensor on your phone does not work (what to do is described below). Considering the technology of the touchscreen, as a rule, most often this control element is quite fragile and finicky. Its performance is highly dependent on weather conditions, damage, and liquid ingress.
If a software failure occurs or the system spontaneously fails to work, problems with the operation of the sensor may occur. These shortcomings are, in principle, conditional and can be easily avoided. We can seriously say that a person is the most important factor in the performance of a mobile device. It is the actions of the owner that will determine how long the device will be in use and why the sensor on the phone does not work.
Common touch screen problems
Often, breakdowns occur due to mechanical damage. If the phone is dropped or deformed, the device will not function properly as a result. Impacts or other mechanical influences can cause various consequences. As a rule, they can be ordinary chips on the cover at best, or a cracked display at worst. If the deformation of the case does not affect the operation of the gadget in most cases, then the screen will need to be replaced. If the sensor stops working, then you need to pay attention to the components of the mobile device. If the case part moves slightly away from the display and you can notice a gap, then you should immediately take the phone in for repair.
Sometimes a smartphone may stop working if liquid gets into it. Many people have absolutely no idea how water manages to get on the board, but this is a common problem.
Self-rehabilitation
If the sensor on your phone does not work, it is not clear what to do, then first you need to go to the device settings. There you need to calibrate the touchscreen. This feature can often be found in the main settings. These steps can be carried out if the screen is completely in order, the body is intact, and there are no signs of deformation or oxidation. If the sensor has a perfectly smooth surface, then it is likely that the touchscreen has simply turned off.
If the forecasts are not entirely optimistic, the sensor on the phone still does not work, what should I do? It is better to immediately start looking for a solution to your problem. In order to perform the following actions, you must have certain skills.
Oxide Elimination
In order to eliminate the oxide, you need to use a special tool - a Phillips and flat-head screwdriver. An unnecessary plastic card will also work. You should take alcohol, a toothbrush, an eraser and napkins. Before you disassemble your device, you need to watch a video that describes how to do it. To do this, just type your phone model into a search engine and look at reviews of it.
You need to be careful when separating parts of the housing. There is a risk that a person’s cable may fly off, wires may break, or any parts may break. In order not to get lost with the screws, you need to draw a diagram of the phone and arrange the screws according to the drawing. All accessible places where liquid can get into should be wiped with alcohol, then with an eraser and then blotted with a napkin.
In order to eliminate corrosion of the board, you need to use a toothbrush. Often this is the reason why the phone’s sensor has failed. Where the cables are connected, especially when it comes to the touch screen connector, it is necessary to treat it with alcohol and remove the deposits with an eraser. As a result, the surface will be dry and clean.
If the screen peels off or shifts, then this is probably the problem. Often in such cases the phone’s sensor fails. To put the screen in place, you need to use a hairdryer. You can peel off the touchscreen from the display simply by heating it. The glue will dry, and then it will be easy to move the sensor to the desired location.
The device must be assembled carefully and carefully, installation must be done one at a time. Don't forget about screwing in the screws. It is also necessary to put protective housings back on the microcircuits.
Other methods: how to fix the problem
There are many other reasons why a sensor can fail, so a person’s actions will directly depend on the failure. Sometimes you can solve this problem yourself, remembering that the repair touch phones- an expensive service. For example, if the sensor does not work due to surface contamination and does not respond to touch, then you need to wipe the screen with liquid. You should also use a soft cloth. This is necessary if the question arises about what to do - the sensor on the phone does not work.
If the protective film was installed incorrectly and now the lower part of the sensor on the phone does not work, you need to replace this coating by cleaning the screen from dirt. Dust and dirt often get trapped under the film. This is what makes working with the sensor difficult.
In other cases, the cause may be a software failure. This problem can be easily solved by resetting the settings or flashing the device. In the most urgent cases, you should contact service center. We'll talk about this below.
If the sensor on your phone does not work for no obvious reason
If the sensor stops working for unknown reasons, it is better to contact a service center and conduct a full diagnostic of the phone. This is the only way to find out the true cause of the breakdown and eliminate it without harm to yourself or additional money spent. If the phone is still under warranty, then you can easily replace the sensor or solve the problem itself. As a rule, experts answer the question of why the sensor on the phone does not work quite quickly. This method is the most effective. If a person does not want to harm his phone, it is best to immediately contact the service center as soon as a breakdown occurs. If you are not confident in your abilities, you should not try to solve this problem yourself.
Results
To summarize, it is imperative to say that the phone should be treated with the utmost care. Replacing the sensor on your phone is quite a complicated process and also expensive. Therefore, it is best to provide your device with the most ideal operating conditions. There is no need to throw it away or treat it carelessly. You should definitely periodically wipe the screen and change the protective film, only then can you really achieve excellent and long-term operation of the touch screen. If the gadget is under warranty, then replacing the sensor on the phone will be a free service.
Modern mobile devices It is impossible to imagine without touch screens. Therefore, it is necessary to decide what to do if the sensor on your phone does not work only after studying the events that led to the breakdown. The screen is the main part of modern smartphones, without which they lose all functionality.
In order to find out why the sensor on your phone does not work, you will need to carefully examine your smartphone. Sometimes problems in the phone are visible to the naked eye, for example, if the screen is broken, and in some cases the functionality may be lost for no reason. Moisture ingress, rough mechanical impact and much more can affect the performance of the device.
If the source lies in software glitch, then there may be a situation where the gadget does not respond correctly to your touch. Such problems often arise due to the actions of the owner himself, who, through negligence or inexperience, made changes to the operation of the system.
Common touch screen problems
The most common reason why the touchscreen does not work is mechanical damage. Impacts and other impacts can lead to negative consequences. The most neutral will be chips, more serious problems will appear when a “web” is formed, in which the device can continue to function.
Because modern smartphones Since the device is quite fragile, even after falling from a height of human height, it stops working. If the device continues to function, and damage is caused by the formation of cracks in the case or its deformation, or the cessation of operation of part of the screen, then it is necessary to contact a specialist as soon as possible for repair work.
Another popular cause is moisture ingress. Despite the fact that the device looks like a monolithic device, it has small cracks and gaps through which liquid gets onto the main board.
Moisture and liquid entering the phone body
Moisture entering a cell phone leads to the beginning of the oxidation process of the contacts and the board. If the gadget finds itself in a similar situation, then you should not disassemble the smartphone unless absolutely necessary. The first thing you need to do is dry the device. If drying does not give results, then it is worth taking it to a specialized repair center, which is especially true for expensive models, interference in the internal circuitry of which leads to irreversible consequences. During repairs, you can use a cheap replacement device that will receive calls and SMS.
Oxide Elimination
In some cases, after moisture gets inside the gadget, through certain time it will start to work, but poorly or incorrectly. In this case, you can try to independently eliminate the oxide that appears upon contact with the liquid.
To do this, you will need a tool with which to remove the oxide (a plastic card, a screwdriver, and so on). Also needed: alcohol, toothbrush, eraser and napkins. Before disassembling your smartphone, you need to read the instructions, which can be found on the Internet.
The cleaning procedure must be carried out carefully, as any awkward movement can lead to additional damage. The disassembled gadget must be folded onto a sheet or napkin so that it can be easily assembled, as per the drawing. Each place should be wiped with alcohol, an eraser and blotted with a dry cloth.
If traces of rust are found, it is removed with a toothbrush. The area is treated with alcohol, the remaining corrosion is removed with an eraser.
It will be especially difficult in cases where the cause is a sweet drink. Exposure to such a mixture has a chance to damage the gadget, and without the intervention of a specialist, repair will be impossible.
Stained display
If the display becomes dirty without damaging the screen, then you just need to thoroughly wipe the sensor with cleaning fluid, and then remove the remaining moisture with a dry cloth. To preserve the display, it is recommended to use a protective film that can be easily applied and removed if dirty.
Damage to the cable
Damage to the device cable is one of those causes of breakdown that cannot be fixed at home. Therefore, if the sensor sometimes does not work correctly, you should contact a specialist who can restore the device’s functionality with a guarantee.
Software glitch
- Reboot your smartphone. In some cases, changed software operation settings will not be applied after a system reboot.
- Use the built-in sensor testing program. To do this, you need to enter a combination that is unique to the device of each brand.
- Check the temperature of the device and place the device in favorable conditions.
- Check the operation of the memory card and SIM card.
- Boot the gadget in safe mode.
In some cases, the problem can be solved by these in simple ways. If your attempts have not yielded any fruit, then you should contact the experts.
Conclusion
In case of any damage to the phone, even a small one, it is better to contact a service center, since even a slight deformation on the case can lead to complete failure of the sensor. Specialists will be able to carry out repairs and provide a guarantee for a certain period.
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