A touch screen phone is a very functional and convenient thing. However, the more high-tech the device, the easier it is to damage it. The sensor (touchscreen) is the “Achilles heel” of modern gadgets, because it is very fragile and is constantly subject to mechanical stress. Careless users can place a bag on it, sit down, flood it, or even throw it against the wall in a fit of anger. And now the long-suffering phone comes to a point when the touchscreen sensor no longer responds to finger touches. What to do if the phone no longer obeys its owner?
There are many reasons why touchscreen does not respond to touch. The main triggers are hardware damage, which can only be diagnosed and repaired at a service center.
What to do if you have The touchscreen on the phone does not work:
- First, pay attention to the neatness of your phone. Dirt or oil stains may cause the touchscreen to respond incorrectly to user touches. Therefore, do not be lazy to regularly wipe the screen with a microfiber cloth. This simple cleaning can get it back into working order. In addition, make it a rule not to handle your phone with dirty or wet hands.
- An incorrectly installed protective film may be the reason why the touchscreen does not respond to finger touches. This happens due to air bubbles and dirt collected between the surface of the touch screen and the film. To solve the problem, you need to re-stick the film.
- Sometimes the touchscreen does not work because the signals received by the device may not be perceived correctly. In this case, a reboot or reset is enough to bring the system back to life.
- Carefully inspect the screen for cracks. Even small cracks can cause... As a result, the touchscreen partially responds to touches only in certain areas. The only way to restore your phone to full functionality is to replace the sensor on your phone at a service center.
- If the touchscreen on your smartphone does not work, this may be due to a breakdown or malfunction of the sensor control chip. As a rule, failure of the microcircuit occurs due to shocks and falls. This can also be caused by moisture penetrating into the housing. Replacing the microcircuit with a new one will help solve the problem.
- In addition to everything mentioned, part of the touchscreen on the phone does not work due to the breakdown of various components. For example, failure of a printed circuit board or its components due to moisture penetration, physical or mechanical stress may result in loss of functionality. Only a complete diagnosis will help determine what exactly has gone wrong.
As practice shows, in cases where the sensor on the phone does not work, the problem lies in the touchscreen. According to statistics, in 90% of cases, replacing the glass on your phone will help restore full functionality. And only in 10% the reason lies in other details.
Remember:
If your touchscreen doesn't work, don't try to repair your phone yourself so you don't have to buy a new one later. Replacing the glass on a phone should only be done at a specialized service center using original parts, since counterfeits quickly become unusable and cannot be repaired.
The site's service center technicians will promptly identify and efficiently fix the problem at an affordable price.
Many owners of Android devices with a touch screen often encounter a problem when the screen “does not listen to them.” That is, when you touch the touchscreen with your finger or stylus at one point, the phone perceives it as a touch at a completely different point. Or the sensor completely carries out orders only after 3-4 attempts. And most likely the cause of these problems is the incorrect operation of the screen, and to fix it, you need to calibrate the touchscreen of the Android device.
Android touchscreen calibration: Video
What it is?
Screen calibration is the process of adjusting the touch display to correctly execute commands when touched with your fingers or a stylus. Of course, you can work with your device without such settings, but then get ready to waste your nerves, time and other troubles.
This procedure is required in most cases after the phone has been dropped, especially in water. Replacing the screen, a water stain underneath, even the smallest damage may require urgent adjustments. Checking whether you need calibration is as easy as shelling pears. First, remove the protective film so that the sensor operation is as clear as possible, then simply enter a number or letter. If you selected, say, “B”, and “A” appeared on the screen, then rest assured that you need to configure the touchscreen.
There are two main types of screens used in the production of Android devices: capacitive and resistive. Capacitive is now used in the vast majority, as it is more reliable and of higher quality. But problems often arise with resistive ones, and they require tuning more often. But it’s fortunate that these days they are rarely used - only in outdated or budget models.
Android sensor calibration: programs, setup: Video
How to calibrate the screen on Android?
Configuration using special programs
In free, and most importantly - free, access, you can find a lot of software for screen calibration. They are easy to install, easy to operate and, most importantly, produce results. For example, Clinometer, TOPON, Bubble - just look at Google Play. But? even if you do not have access to Google Play, you can adjust the display without it using the second method.
Self-configuration
In order to independently adjust the touchscreen of Android 4 (or another version) without any problems, we will present you with step-by-step instructions:
- The first step, of course, is to go to the Settings menu.
- Next, select “Phone Settings”.
- Find the “Calibration” item and a target cross with a dot inside will appear in front of you.
- We aim at the center of the target several times (3 will be enough).
- After this, your device will remember the touches and calibration can be considered complete.
- After completing the setup, check the operation of the sensor. If exactly the symbol you clicked on appears on the screen, then everything was done correctly. Congratulations! ()
Setting touch screen sensitivity on Android: Video
Contacting the service center
Now you know two ways to calibrate the screen on your Android device yourself. But there is a third option for setting up your device - an official or private service center. It would seem, why contact the master for such a trifle? But such a problem is not always a trifle. It happens that the cause of the breakdown is not due to lost settings, but to a serious breakdown or manufacturing defect of the display. In this case, it is really better to contact the service if the first two do not work.
Mobile devices fail sooner or later. The situation is unpleasant, but often correctable. In this article we will talk about cases when the sensor on your phone does not respond and what can be done in this case. Most likely, you have already tried to press different buttons that are on the screen. And everything turned out to be useless - the smartphone did not respond and still does not respond. It’s too early to think about technical services. Let's find out how to solve the problem.
The phone turns on, but the sensor does not respond to touch
This often happens that the phone can work, but the sensor does not respond when the device was hit in some situations. And the screen became covered with a crack. Perhaps even the honor of the screen has practically crumbled. But if we turn it on with the power button on the edge of the smartphone, the screen will show the operating system desktop. You may still not be able to control the cursor on the screen. But the internal system is not damaged.
Mobile phone with non-functioning sensorIn such situations, you are clearly powerless, unless you know how to replace a smartphone screen yourself. But you can temporarily control a mobile device using a regular computer mouse with a USB plug.
USB mouse for touch phone control You probably already know that your smartphone does not have a USB port. Therefore, you will need an OTG adapter.
OTG cable It's inexpensive. And it is a bridge for almost all external devices that a smartphone system with a damaged sensor can support.
For example, you can connect directly any flash drive to your device via this cable. This is very convenient when it comes to transferring files between devices. An OTG cable can sometimes be found in the box of some mobile devices. Connect your mouse to this cable. And the microUSB plug goes to the port on the smartphone. Turn on the power button and use the mouse to control.
What to do if the screen is partially working on a Redmi smartphone
In some cases, the sensor on your smartphone may respond but be unstable. May appear delays in response, virtual buttons remain pressed and so on. We will now try to solve this problem by replacing the ineffective dielectric gasket. It is located under the battery of smartphones of these models.
An example will be given on the Redmi 5 model:
- Remove the screws on the back cover to open it;
Remove the back cover of the smartphone - Carefully remove the cover and pull out the cable that extends from the device’s camera. It can be pulled out of the socket on the phone board;
Remove the cover carefully so as not to damage the cable - Remove the battery and pull it out dielectric gasket, which is located on one of the loops;
Remove the dielectric backing - Carefully pull out the cable from the upper socket, stick strips of cardboard tape in one layer under it into the groove so that the battery can fit into place;
Seal the groove for the cable with cardboard tape - Now put the cable back, insert the contact into the cell. And fully assemble the device to check its operation.
Turn it on now and check if the touch screen on your smartphone responds to touch. If this method does not achieve a satisfactory result, remove the tape. There is another way to eliminate freezes and poor sensor response - flashing the mobile device system. There is no need to try to reflash your smartphone yourself if you have never done this before. It is best to take the device to a service center.
The screen is intact, but the sensor does not respond
There are a few more tips for smartphone owners whose devices have stopped responding to touches on the phone. Users often complain that the smartphone did not fall, did not fall into water, or was damaged in any way. And although the screen works, the sensor does not respond to pressure. Try the following method. In some cases, it may help solve your problem.
Procedure:
After which you may need to reboot the system again. Try controlling your smartphone screen.
The touchscreen on the smartphone freezes in one place
People encounter this problem quite often. When typing text or numbers in one specific place, the screen does not want to work in normal mode. Letters may not be pressed correctly. Instead of one letter “A”, press the adjacent “P” and the like. Such cases are still typical if you have been using the device for more than a year. The reason may lie in smartphone battery.
The surface of the battery may be swollen. After some time this happens to them. Bloating should not be clearly visible. It can be determined by removing and placing the battery on a flat surface. Press on two opposite corners of the battery to see if the bulge can be detected. A working battery should lie flat on a flat surface and not dangle. And since there are already bulges on it, with one side it presses on the sensor from the inside. What could be causing poor screen responsiveness?
Check also, Is there a wire or an extra object under the battery?. Any unnecessary or interfering objects can put pressure on the screen from the inside. You won't be able to replace the battery right away. And for a few days you can do a little trick. It lies in incomplete installation of the back cover. Hang it on the top mounts. Don't press down the bottom ones. So as not to pinch the convex battery.
Reset your phone to factory settings
Every digital device has a subsystem that regulates system boot, selects boot media, and sets parameters for connected devices. Your smartphone has it too. And we will use it to restore the device settings to factory settings if the sensor in your mobile phone is faulty. And also the previous methods did not help eliminate the problems with it.
Since now we are talking about any phone model, you will need to independently fulfill all the conditions after which you can enter the “ Recovery »:
| Condition: | Explanation: |
|---|---|
| To get into this mode on the smartphone, you need to press two or three buttons at the same time and hold them until you see a menu that is unusual for your device. | It can be Power button pressed together with the volume up button. And the volume down and power button. You should experiment with combinations. |
| Before trying, be sure to turn off your smartphone. | You can launch the menu only when the smartphone is not working. |
| Connect the smartphone with the non-working sensor via USB to the computer and transfer the data to its memory. | If you have access to system folders, gallery, make copies of important files. |
Only after all conditions have been met, launch the Recovery menu:
The mobile phone memory will be completely cleared. Perhaps the problem was at the software level. And after restoring the system settings, there is a chance that the device will again work stably and without glitches on the screen. Turn on your phone and check if the sensor responds to your touch. If, after applying the methods described in this article, your device does not work correctly, we recommend contacting service. Because most likely the problem lies deeper. And you can’t do without inspecting the device by competent people.
Modern touchscreen mobile phones are a generally accepted attribute of our lives. Their rich functionality and broad capabilities allow them to be used to solve many problems that are not limited to classic phone calls. The wealth of options for using such devices leads to their gradual failure, and one of the common failure options is the dysfunction of the sensor on the phone, when the latter simply stops responding to presses (or reacts extremely poorly). In this article I will tell you what the reasons for this dysfunction are and what to do if the sensor on your phone does not work.
Reasons for phone sensor failure
Let's look at common reasons why a phone's sensor fails. They may be as follows:
The sensor on the phone does not respond, what should I do?
To restore normal functionality of your phone's sensor, do the following:
*#7353# - for most Android phones, especially Samsung;
*#*#3424#*#* - for most HTC phones;
*#*#7378423#*#* - for most Sony Xperia phones;
*#0*# - for most Motorola phones.
In the menu that appears, select, for example, “TSP Dot Mode”, and by clicking in different areas of the screen, see which parts of the sensor are not polled, this can help fix the problem in which the touchscreen does not work.
Restoring the sensor through safe mode
To boot into safe mode, turn off the phone completely (including by removing the battery). Then, long press the Power button to turn on the gadget. When the Samsung, Nexus, LG, etc. logo appears on the screen, press the Power button and then hold down the Volume Down button. Press this button when your device boots up, and you will see the inscription “Safe mode” at the bottom left of the screen.
Conclusion
If the sensor on your phone does not work, then I recommend using the tips I listed above. If it is impossible to identify the specific cause of the breakdown, I recommend taking your gadget to a service center - it is quite possible that your device will need a complete replacement of the touch panel.
If your iPhone stops responding to touch, there are several repair options:
replace the entire module;
replace the touchscreen (to do this you need to disassemble the model).
However, there are cases when repairs as such are not required. Sometimes the sensor stops working as a result of a software failure or poor cable contact.
The contact may disappear after a fall, or as a result of poor-quality repairs at a service center. It is impossible to find out the exact cause of the breakdown without disassembling the phone, so if you do not have the necessary skills, you should not deal with this problem yourself. Unless if there is a software failure, you can try to fix everything yourself by resetting the settings to factory settings.
You need to do a reset first. Very often this allows you to solve a problem with the performance of the sensor and avoid a trip to the service center. To reset the device to factory settings, connect it to your computer and perform a reset.
You can do it without connecting to a computer. To do this, press and hold the power and home keys. You need to keep the buttons pressed for 10-20 seconds. After this, the device will reboot. Before resetting, be sure to back up your phone.
If the reset does not help, then you need to start disassembling. To do this, you need to stock up on the necessary tools, including a star screwdriver, plastic spudgers for disassembling the case and a suction cup for the display. It's not difficult, watch the video on how to disassemble an iPhone.
It is necessary to remove the cover and check how well all the cables are connected. There are 3 cables coming from the display module. One responsible for the sensor, second for display image and third comes from the “Home” button.
Sometimes, after a fall, the cable flies out of its socket, and without good contact the sensor will not work. It is necessary to install the cable until it clicks and good contact should appear.
After checking the connection of the cable to the motherboard, check the functionality of the sensor. If everything works, then you can safely use the phone, but be prepared for the fact that if you fall, the problem may recur. If it is not possible to restore functionality, then it is necessary to change the sensor.
It is best to have your smartphone repaired at a service center. Having the necessary experience, you can repair your iPhone yourself. The easiest option for this is assembled.
In this case, you need to buy a new module of the desired color, disassemble the smartphone and replace the damaged module with a new one. With this type of repair, you don’t have to worry about the continued performance of your iPhone. The new model should work no worse than a new phone.
More complex repairs will be required when replacing only the sensor. In this case, you will have to re-glue the sensor and completely disassemble the module. At the same time, it is very easy to damage the working elements - cables, display and protective glass, which is easy to break when unsticking the module.
In some cases, neither replacing the entire module, nor repairing it, nor updating the smartphone firmware will help, for example, if the motherboard or image controller is damaged.
In this case, you can repair the phone only by re-soldering the controller or replacing the motherboard. It is better to carry out such repairs at a service center.
Before starting work, ask the technician to carry out diagnostics. Only after this will the real cause of problems with the touch screen become clear.
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