While using a Xiaomi smartphone, a situation may arise when the touch screen of the smartphone stops responding to touches. In most cases, you won’t be able to deal with the breakdown on your own, so the best option is to contact the Xiaomi service center in Moscow.

We bring to your attention a list of reasons that can lead to the Xiaomi display not working.

Software failure

The reason may be hidden in an error that occurred during the operation of the Android operating system. Often the problem is resolved by restarting the device, which requires holding the Power key for a few seconds.

You can minimize the likelihood of a system error occurring if you regularly clear your device’s memory of junk and rarely used applications. It is not recommended to use third-party sources to install programs, with the exception of the Google Play Market online store. It is highly undesirable to install custom shells, since the reliability and stability of the system is guaranteed only by the global version of the firmware.

Mechanical damage

The display module is represented by a touch-sensitive sensor, a controller and a cable designed to connect the controller and sensor. Due to mechanical stress, any of these elements may fail.

If your Xiaomi phone is dropped, the sensor will most likely malfunction due to damage to the conductive threads. Breakage of the wire is caused mainly by water getting on it, which leads to the appearance of a layer of oxide on the contact pads and, as a result, the impossibility of signal transmission through them. To restore the functionality of the gadget in such cases, you will need to change the cable or resolder the contacts, which is almost impossible to do at home due to the lack of necessary equipment and spare parts.

Controller malfunction is usually caused by very strong impacts and moisture penetration. As a rule, it is not restored, so the chip itself is changed in a repair shop.

Please note that if your Xiaomi smartphone has been exposed to water, it is recommended to take it to a service center as quickly as possible. This will prevent more serious damage that occurs due to corrosive processes.

Manufacturing defects

An extremely rare occurrence, since the brand’s products are distinguished by their reliability. The fact that the cause of the malfunction lies in a manufacturing defect will be indicated by the failure of the touch buttons to work, the lack of response to a certain part of the screen, the recognition of scrolling as a press, etc. The operation of the device can only be restored by replacing the entire display module.

Incorrect installation of protective glass

Common causes of Xiaomi sensor malfunction include incorrect installation of the protective glass. For example, it may not fit correctly, dust may get on the screen, and air bubbles may remain between the touch module and the glass. In this case, you should remove the glass and install a new one.

Following the rules for using your phone can minimize the likelihood of touch screen failure. Try not to drop the device, do not expose it to moisture, and do not install programs from unknown sources or proprietary firmware. If a breakdown occurs and if a reboot does not help, it is better to seek help from specialists.

 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.

Modern gadgets have become an integral part of our lives. The telephone is the most common gadget. Almost every person has it. Unfortunately, even the most reliable phones can break due to shock, water, or software glitches. The most common problem that many mobile device users face is that the sensor does not respond to touch. If the device is still under warranty, then you should immediately contact the service center. Otherwise, there is no need to rush, because there are cases when the problem can be easily and quickly fixed. The sensor does not respond to touch, what should I do in this case? Let's look at all aspects of this problem.

Phone screen repair

Before solving the problem, you need to make sure what is causing your display to break down. This could be mechanical damage, liquid getting inside the device, or a software failure. If you are sure that you did not drop the phone or spill liquid on it, then we can assume that this is a software glitch.

Cleaning your mobile phone screen

First, you can simply clean the display of your device. You will not harm the phone in any way, but improve the connection and perhaps the problem will be solved. This method may help if the sensor does not respond to touch. What to do?

Take a suitable cloth and liquid to clean the screen. It is better to use lint-free or any other natural fabric. To clean the display, we will need a glass or monitor cleaner.

If this method does not help, then you should move on to the next steps. Of course, they may not help either. Only a professional can determine the true cause of the breakdown, but even he cannot solve every problem.

Software glitch that caused the display to break

If the display of your mobile device sometimes reacts to your touch, then you can try to do a Hard Reset of the system, this is a complete reset of the settings. But it’s worth remembering that this can only help if the sensor glitches from time to time. After resetting the settings, install applications that can clean the system registry. This will eliminate errors caused by RAM. Recommended applications are WinFixer and Cleaner4. Unfortunately, the second utility is paid, but has good functionality. The first program is suitable for you if you are not sure of the reason why the display does not respond well to touch, and you are not going to spend money.

All actions should be performed without a memory card. It may contain viruses that cause system malfunctions. After resetting the settings and cleaning the registry, you need to put the SD card in place and scan the device with an antivirus. Select full device scan and wait. But even after these actions, the sensor does not respond to touch. What to do? In this case, it is necessary to proceed to replacing the sensor, since the reason is not caused by a software failure.

Mobile phone display replacement

The sensor does not respond to touch - what should I do? If the previous methods did not help, then you need to replace the damaged display. Most often, this needs to be done when the device has been dropped, cracks have appeared, or moisture has entered. In the latter case, you may not even notice how liquid got into the phone, as this can happen due to temperature changes. Thus, condensation that accumulates in a mobile device will interfere with the normal operation of the phone. At first, black spots may appear when working with the gadget, and later the sensor itself will stop responding to touches. In this case, you will need to change the screen.

Repairing a phone screen is not a very complicated process, the main thing is care and accuracy. Anyone can do this. The sensor does not respond to touch - what should I do? First you need to disassemble your device, but you should remember the sequence of actions so that there are no problems with assembly in the future. All plugs and latches are removed using a thin object. You will need to carefully remove all elements from the latches with this object.

After disassembling your smartphone, you need to remove the display. It is necessary to check how the display is attached to the matrix. This can be done in two ways: monolithic or separate. This is very important, since when ordering a new screen, this aspect will need to be specified.

The sensor can also be connected to the circuit board in a variety of ways. There is a contact method, in which the sensor is simply disconnected, and a wired one. In the latter case, you should be very careful.

If you need to detach the matrix from the sensor, you must follow these recommendations:

• First, heat the surface to 60 degrees. This can be done using a regular hair dryer. It should be heated evenly so that the glass does not crack and the glue heats up.
• Next, you need to find a flat and thin object to easily disconnect the sensor from the matrix. To do this, simply pry the edges and carefully lift them up.

All that remains is to attach the new sensor. How to do it? The kit should include the sensor itself and glue. First we apply special glue, and then carefully attach the sensor.

Cost of a new display

How much does it cost? Of course, the cost of the screen will vary for different smartphone models. On average, to change the display on phones with a diagonal of 4.5 or 5 inches, you will need to pay about 700 rubles.

If you don’t want to disassemble the phone yourself, you can contact a specialist. The master will ask about 2000 rubles. Although this procedure is not very complicated and you can change the screen yourself. You just need to approach this carefully and carefully.

Touch buttons don't work

The lower touch buttons directly relate to the screen and if they fail, you need to do all the steps that we have already considered. If the touch buttons do not work, you should first do a full reset. Next, clean the system registry and scan your device for viruses. Unfortunately, if the steps taken do not help, you will need to change the screen.

Articles and Lifehacks

Most modern phones are controlled using a sensor. Information is displayed on them. The era of push-button monoblocks and clamshells has already passed.

In this regard, mobile phone repair specialists come to the problem that the screen of a touch phone does not respond to touch. However, before going to the experts, you can try a few steps yourself.

Causes of the problem

There can be many reasons. Let's describe the most common of them:

• the phone’s RAM is overloaded to such an extent that the smartphone does not have enough resources to process clicks;
• the board is oxidized or very dirty, as a result of which the pressing signals simply do not reach the processor;
• the cable is damaged or has come loose;
• The most serious and expensive thing to repair is that the display is broken/broken/filled with liquids.

What can you do at home to get back to work?

First of all, check the charge level and charge the phone to at least 40%. Then clean the screen of contaminants. The next step is to clear the RAM and stop resource-intensive applications.

You should try to restart your mobile device. When it is not possible to reboot, we simply pull out the battery, wait a couple of seconds and put it in place, after which we turn on the smartphone in the hope of success.

This is the very first thing to do. If this does not help, then look below.

It is better to perform further actions after you know exactly where and what is attached to the board in your phone. Read the forums, look for articles on the topic “Parsing ... telephone models at home.”

1. We remove the back cover, be sure to take out the battery and carefully disassemble your device.
2. We put all the screws in a separate container so that later we don’t have to look for them somewhere on the floor.
3. We look where the plume goes and look for damage. There is no damage - great, then we just disconnect the display from the board and reconnect it.
4. Since the device has already been disassembled, at the same time we will wipe the contacts on the board with a cotton swab and alcohol. We put everything in place, tighten it and turn it on.

Nothing helped? Now you definitely can’t do without a master or service center. We go to the workshop and describe in detail the problems and all the actions that you performed with the phone. This can significantly speed up repair time.

Touch control has become an undeniable advantage of smartphones over conventional mobile phones. It not only made the interface more convenient and intuitive, but also significantly increased the capabilities of various applications, especially games. If the sensor does not work on Android, the smartphone turns into a practically useless device, losing 90% of the available functions. From this article you will learn how to protect your phone’s touchscreen, what malfunctions there are, how you can fix the sensor yourself, and when you need to contact a service center.

Reasons for sensor failure

All types of touchscreen breakdowns can be divided into three types depending on the nature of the malfunction.

Incorrect reaction to touch

The smartphone responds to touches on the screen, but perceives them partially or incorrectly. On special forums people often ask why part of the sensor on an Android phone does not work. There may be several reasons for this:

• Screen dirty. Grease or dirt from your fingers gets onto the display and the sensor can no longer accept commands. Typically, such spots occupy a certain area in which control does not work. In this case, you need to wipe the display with a damp cloth and no longer touch the phone with dirty hands.
• Incorrectly applied protective film or glass. These are two popular and necessary accessories for a smartphone, since replacing them is much easier than replacing the display in case of mechanical damage to the phone. But if they are glued incorrectly, the display does not respond to touch in certain places due to air or dirt accumulated under the protective shell. The film or glass must be removed, the screen cleaned and the new protection correctly applied.
• Mechanical damage to the display, in which part of the sensor does not work. This is usually accompanied by a noticeable web of small cracks on the screen. In the best case, you will have to replace the glass on the screen or the touchscreen, in the worst case, you will have to buy a new display, which in flagship smartphone models can cost a third or sometimes half of the entire device.
• Calibration failed. You press in one place, and the sensor reads the touch in another. This is easy to fix. In the next paragraph of the article we will tell you how to deal with this.

Spontaneous commands without touching

It also happens that the sensor lives its own life. This group of touchscreen malfunctions involves working with constant malfunctions. For example, you don’t touch the screen, but the smartphone receives commands, and you can even see the visualization of your touches. In this case with your phone the following:

• Software glitch. Errors in the Android OS are not uncommon, because some people write the software, others make the components, and still others assemble smartphones. Often crashes occur after installing new programs or when updating the OS. Therefore, when this malfunction occurs, the first action is to reboot the phone. If this does not help, you should remove recently installed applications and roll back the OS to the previous version. The last resort is a factory reset, which deletes all personal information but eliminates any software glitches.
• Dust or moisture has gotten inside. The sensor itself “presses” the screen if its contacts or control board are clogged with dust or oxides due to moisture trapped inside the device. We will look at this error in more detail in the next paragraph.

Touchscreen does not respond

It happens that the display does not respond to touch at all, although outwardly there are no signs of damage. In this case, most likely:

• The control board is damaged. It could break due to a blow from the phone or due to dust and moisture getting inside. The absence of external damage when the phone is dropped does not mean that its components remain safe. In addition, the effect of such falls can accumulate. It happens that the cable has simply moved away from the contact, and to restore the screen operation it is enough to return it to its place.
• The cable is completely or partially broken. The reason is mechanical damage. But if the sensor turns on every other time, it means that some contacts are damaged and the cable must be replaced. If you have the tools, spare parts and due care, you can do this yourself, but it is recommended to contact a service center.

How to fix a broken mobile phone sensor

It’s not always the case that if you have problems with your touchscreen, you should immediately go to a service center. In the previous section we provided solutions to the simplest breakdowns, and now we will look at several more serious faults.

How to calibrate the touchscreen

If the sensor is pressed in a different place, its operation needs to be adjusted using calibration. There are two ways to do this.

• Firstly, the official Google Play app store has special programs that are free to download. Their disadvantage is a huge amount of advertising, so after one use they can be safely removed.
• Secondly, Android OS has a calibration option in the phone settings. The difficulty is that in different versions of firmware and shells from manufacturers, the required menu item is located in different places. You can only give accurate advice for a specific phone brand, taking into account the firmware version.

The main problem with sensor calibration is the large selection of smartphone models and Android OS versions, because the settings menu has a different interface, or downloaded applications are not suitable.

Cleaning oxides and positioning the sensor

The touchscreen looks like a thin film to which a cable is connected. It is located between the protective glass and the display itself. This design is classic and is used in most Android smartphones.

You can find information online on how to carefully remove the protective glass. To do this, heat the glue with a stream of hot air, turn off the sensor, clean it and the contacts, and then correctly install it back into its working position. This repair method is effective when the sensor on the phone partially does not work or spontaneous clicks occur.

This repair is not suitable when the display has a block design, that is, the screen, sensor and protective glass are a single unit.

Display modules are better protected from mechanical damage, dust and moisture, but if they break, they can only be replaced with a new one.

This design does not provide for the possibility of repair.

The sensor stopped working for no apparent reason

It happens that users of Android devices wonder what to do if the sensor lags or the touchscreen does not respond for no obvious reason. Owners of such gadgets assure that they have not dropped or gotten their devices wet, but breakdowns do not appear out of the blue.

The cause of the malfunction may lie in a manufacturing defect, frequent exposure to a dusty or humid room, or minor impacts that gradually led to the displacement of parts. After analyzing these factors, you can roughly determine the type of breakdown and decide whether to restore the phone yourself or contact a repair shop.

How to protect your smartphone

In conclusion, we note that with each new generation of mobile phones, sensor protection improves. To avoid paying for repairs, it is better to think about additional means of protection.