Sensor not working on Samsung phone. The sensor on the phone does not work - what to do? Why the touchpad does not work on a smartphone

13.06.2023

One of the most common problems faced by smartphone users is the Samsung touchscreen not working. The reason for the situation can be anything, from banal screen contamination to mechanical damage that requires the involvement of an expert. Below we will consider in what cases the touchscreen of Samsung smartphones may fail, what to do in such situations to fix the problem, and how much repairs can cost when contacting a professional.

Causes of the problem

To begin with, we will analyze the main reasons why the sensor does not work on Samsung. For convenience, we divide them into several categories.

Simple reasons:

Dirt or water on the glass surface. A dirty display often causes the Samsung touchscreen to not work. This also applies to situations with moisture ingress. That is why look to avoid such problems.
Error in setting the film on the display. Another reason why the sensor on the Samsung phone does not work well is the incorrect installation of the film coating on the surface. For example, dirt and air could get between the film and the screen, due to which there is no finger contact with the display.
Ingress of water. Condensation may form inside the device if the temperature changes abruptly. The situation is even more complicated if the smartphone is completely filled with liquid (juice, water, beer and other drinks).

Mechanical reasons:

Cracks in the display. Sometimes even a small scratch does not work Samsung touchscreen. As a rule, this manifests itself on a certain part of the monitor where there is damage.
Loop break. A common situation is when a cable connecting the Samsung screen and the main part of the device has completely or partially departed inside the device.
chip damage, which controls the Samsung touchscreen. Such a problem could arise due to the fall of the phone from a great height and damage to its internal elements.

Hardware failure:

The device does not receive signals due to software problems.
Malfunctions of the control chip.

If the touch buttons on Samsung do not work, the reason, as in the cases discussed above, may be damage to the cable or a hardware failure of the smartphone itself. Such problems often appear after mechanical impact.

How to solve the problems that have arisen?

Knowing the approximate cause of the malfunction, you can decide on the second point - what to do if the phone screen does not respond to touch (for Samsung). If we are talking about the usual contamination of the screen, it is enough to wipe it with a special cloth. In case of mechanical damage, it may be necessary to repair and involve a master to solve this problem.

The easiest way to solve the problem is if the touchscreen on Samsung does not work due to a hardware failure. In such a case, the following steps can be taken.

Restart your smartphone

If the touchscreen on a Samsung smartphone suddenly does not work, try turning it off and turning on the power again. In many cases, the problem is fixed after the first reboot. If the phone cannot be turned off using the standard method, use a long press on the power button or briefly pull out and install the battery (if possible).

Take out the SIM card

If for some reason the sensor on the Samsung phone does not respond, turn off the device and remove the SIM card from the device. After a few seconds, return the SIM card to its place and check if the Samsung touchscreen is working or not.

Boot the machine in safe mode

Another method to solve the problem is to log into Samsung without third-party apps. Often there are situations when malfunctions are caused by the action of some application. Booting your smartphone in safe mode allows you to confirm or deny this version. To do this, turn off the device, press the power button for a few seconds until the Samsung logo appears. After that, do the following:

release the Power button and immediately press the volume down key;
hold it in this position until the device is completely rebooted. At the bottom left, an inscription should appear that Samsung is in safe mode;
check the operation of the touchscreen.

If necessary, remove the extra application.

Let your smartphone rest

The Samsung touch screen often does not work due to overload, which is manifested by the freezing or slow operation of the smartphone. Such situations often occur when the user is playing "heavy" games or watching movies. If the sensor suddenly freezes in one of these situations, leave the phone alone for a while. After 30-40 minutes, check again if the touchscreen is working or not.

Clear the RAM cache

One of the causes of failures in the touchscreen is an overload of the graphics processor. To clean up "dead" pixels, you need to remove the extra RAM cache. After that, close all Samsung applications and restart the device.

Do a hard reset

One of the cardinal steps, if the touchscreen does not work on a Samsung phone, is a hard reset of the device. In this case, all unnecessary data is deleted from the smartphone, and the latter returns to the factory settings. A short algorithm of actions is as follows:

press the volume up, power on and home buttons, hold them until Galaxy appears;
release the power button, but hold the other keys;
release the rest of the buttons when Android appears;
select the option to reset the phone to factory settings;
wait for Samsung to restart.

The last measure is performed in extreme cases, when you are sure of a software failure, and after applying other methods, the touchscreen does not work. In addition to the above steps, you can do the following:

use the built-in Samsung program to test the sensor;
check the temperature of the device and in case of overheating let it cool down;
make sure the memory card is working properly.

If none of the actions gave a result, and the touchscreen still does not work, contact the masters.

Is it possible to do something on your own

In the event of a software failure, you can take the steps mentioned above and restore the functionality of the touchscreen. The situation is more complicated when it comes to mechanical damage or water ingress into the device. Let's take a closer look at the top recommendations.

Moisture ingress

If water gets into the phone, oxidation appears on the contacts. Over time, important contact connections are damaged. As a result, the sensor may fail. Many make a mistake and immediately disassemble the device. It is not necessary. At the initial stage, it is enough to dry the device with a hair dryer or purchase a special drying kit. If these steps do not work, take the device to a service center for repair.

Wizards determine why the touchscreen does not work, and what measures to take to solve the problem. Self-disassembly and attempt to repair the phone can lead to irreparable consequences, including the final breakdown of the Samsung smartphone. For the duration of the repair, you can take some budget device that can receive calls.

Oxide removal

If drying does not work, or moisture has entered the device for a long time, oxidation may appear on the contacts. To restore the normal operation of the device, this plaque must be removed. If you have experience repairing phones, you can try to remove the oxide and restore the smartphone. The algorithm of actions is as follows:

Prepare a small screwdriver, toothbrush, alcohol, grater and napkin.
Read the instructions for disassembling the device (available on the Internet).
Disassemble your Samsung smartphone and lay out the parts on a clean surface so that you can quickly assemble the device later.
Wipe the contacts with alcohol, an eraser and blot with a dry cloth.
If traces of corrosion are detected, remove them with a toothbrush, and then treat the problem area with alcohol. Remove the rest of the rust with an eraser.

If the touchscreen is not working due to a sugary drink spilled on the Samsung, it is difficult to restore the work on your own. It is better to seek help from a specialist.

Loop damage

Violation of the integrity of the loop is one of those situations that cannot be solved at home. To fix the problem, it is better to contact the service center and entrust the work to the master. The specialist knows how to check the touchscreen on the Samsung, and what signs indicate a broken cable.

Problem after replacement

Some users replace the display with Samsung and then find that the touchscreen does not work. In that case, take these steps:

perform a soft reset;
do the repair again, but from the very beginning, and at the time of connecting the screen, check that it works;
make sure that there is no strong pressure on the screen;
if the touchscreen on Samsung works partially, we can talk about the failure of the device.

The above steps can be done if you have experience in smartphone repair. This is especially true for a situation that involves disassembling Samsung and carrying out restoration measures inside the device.

What models are most likely to have the problem?

Samsung does not keep statistics on displays that have a problematic touchscreen. In all devices, this element is reliable enough to serve a long time without failure. Theoretically, a malfunction can occur on any device in the event of a mechanical shock or software failure. In particular, there are complaints on the web about the disconnection of the sensor in the Samsung Galaxy A3 and A5. Other devices from this series are also at risk.

How much does the repair cost?

As can be seen from the article, many problems cannot be solved without the involvement of a specialist. The master knows well how to change the touchscreen on the Samsung, what to do to diagnose the problem, and how to fix the problem. Repair rates vary widely and depend on many factors - requests from the service center, the severity of the breakdown and the model of the phone.

On average, replacing glass on Samsung will cost 600-700 rubles. If you need to change the touchscreen, you will have to pay the same amount somewhere. It will cost more to repair power circuits (about 1500 r), cleaning after filling with liquid (1500 r) and data recovery (1500 r). In general, the work of the master costs from 300 to 1500 r, depending on the volume and complexity of the work.

In order not to worry about the fact that the touchscreen does not work on Samsung, it is worth taking precautions. Let's highlight the main steps:

Use a quality film or glass to protect your Samsung touchscreen. Such products protect the screen from mechanical damage in the event of a fall or impact with a hard object.
Keep the warranty for the entire period. This will save money on repairs (if necessary). For example, if the cause of the failure is a loop break or the display does not work. Having a warranty on hand allows you to get help (sometimes free) from Samsung.
Install reliable anti-virus software that protects the OS from viruses.
Before launching the application, make sure that it works properly and does not cause malfunctions of the Samsung touchscreen. Alternatively, it is worth reading a few reviews.
Try to avoid games that have "heavy" graphics, because this increases the likelihood of failure of the touchscreen.
Do not play or talk on the phone while charging the battery. In this case, the likelihood of overheating increases significantly.

Now you know why the sensor does not work on the Samsung phone, and what to do. The appearance of a malfunction is not a reason to panic, because in most cases the problem is solved by a simple reboot or by taking other measures discussed in the article. If none of the methods helps, go to the master and entrust him with the restoration of the device.

This article will tell you about the reasons why the touch screen does not work on an Android phone or tablet, as well as what repair and diagnostic procedures you can carry out on your own, and what is better to contact a service center.

This article is suitable for phones and tablets of all manufacturers of Android devices: Samsung, LG, Sony, Huawei, Xiaomi, HTC, ZTE, Fly, Alcatel and others. We are not responsible for your actions.

Let's look at the most common reasons when the sensor of an Android device fails:

Random malfunction of the gadget.
Installing the incorrect firmware of the device led to a breakdown of the sensor.
The internal components of the device (cable, board, etc.) broke down.
The memory of the smartphone is full, because of which it cannot properly serve the touch screen.
The work of applications led to the freezing of the gadget and the sensor of the device.
SIM card or SD card is unstable.
The sensor has become detached or displaced.
The sensor is physically damaged after the impact.
Moisture got inside the gadget, which caused the contacts to oxidize.
The device has overheated due to various reasons, in particular, due to a sharp temperature drop.
On the screen, the protective film does not adhere tightly enough to the screen of the product (dirt, bubbles between the film and the screen, etc. are visible).
There is a lot of grease and dirt on the screen of the device.

What to do if the sensor does not respond?

To restore the normal functioning of the tablet or smartphone sensor, follow these steps:

Restoring the sensor (safe mode)

To boot in safe mode, you must completely turn off the gadget (including by removing the battery). Then we perform a long press on the Power key to turn on the device. When the product logo is displayed on the screen, press the power button, and then hold down the Volume Down key (volume down). We press this button when the device boots up, and then the inscription at the bottom of the Safe mode screen will be shown.

We update the gadget OS (if updates are available). We also install all updates to the existing software on the device, which will solve the problem of the sensor.
If there is a suspicion that the internal components of the smartphone are broken, then we address the problem to the service center.
If an incorrect firmware is installed, you must install the "native" firmware for the gadget.
A radical method is to reset the settings to factory settings, using the Recovery Mode. All information on the device will be lost (including the phone book). To do this, go to Recovery Mode, where we select "Wipe data / factory reset", and then we specify "Reboot system now" to reboot the device in normal mode.

Increase

Android Screen Calibration

The calibration process includes setting up the screen in order for the gadget to execute commands through touching the sensor with fingers or a stylus. Without this configuration, the product will work, but during operation there are undesirable consequences, including failure of the touch screen.

On Android, there may be a problem of "naughty" touch screen. The system perceives a touch with a stylus or a finger at a certain point of the sensor as other commands. There are still situations when only after the 3rd or 4th attempt the sensor executes the implemented commands. Often the cause of these problems is related to the incorrect operation of the screen itself, so you need to calibrate the touchscreen of the device.

Correct and urgent calibration of the Android gadget may be required when the device is accidentally dropped into the water or from any height. Another sensor calibration is needed after repair work related to replacing the screen, the appearance of a water spot under the glass, and after other transferred actions, even seemingly insignificant.

To check if this procedure is necessary, follow these steps:

We remove a special protective film from the screen (to ensure the most accurate operation of the sensor).
Enter any number or letter.
During the discrepancy between the button pressed on the display of the device and the displayed information, the touchscreen must be adjusted.

Basic Calibration Methods

There are two ways to bring a knocked down sensor to its normal position:

Application of special applications for Android system.
Self-correction.

It is important to remember that for some brands, the calibration steps are almost the same and are considered identical. Android gadget manufacturers can often use 2 types of sensors:

Capacitive - are used in most devices, they are more reliable and of high quality.
Resistive - screens that are made using this technology often break, so tuning is more in demand here. Such screens are almost never used at the moment - these systems are available only in budget or outdated models.

Android Screen Calibration

If there is no access to the Play Market catalog, you can calibrate the device screen using Android tools. Let's follow the step by step instructions:

Go to the "Settings" section of the device.
Select the "Phone settings" menu.
We find the item "Calibration, press the button."
The cross target should appear on the screen, inside which there is a dot.
We press this center of the formed target at least 3 times.

After the actions taken, the gadget will independently memorize the touches performed. It turns out that the calibration can be considered complete. After completing the setup procedure, you need to check the operation of the touchscreen by the result of pressing certain characters on the screen.

Android Screen Calibration Apps

Sensor adjustment can be done using special applications. Free access has the necessary programs to calibrate. Applications in installation and operation are simple, but the main thing is to get an effective and positive result from the use of any of them. In the Play Store you can find such free applications:

Clinometer.
touch screen tune.
Power Bubble and others.

For example, the Power Bubble app has a great interface that has additional accessibility features. To start calibration, you need to launch the application, and in the settings select the product screen orientation option (or set the “Auto” mode), and then calibrate by level.

The display of a modern phone is not in vain called the most vulnerable component of the gadget. According to statistics, the most common reason for repairing a mobile device is a breakdown or incorrect operation of the sensor. At the same time, many users, not understanding the true cause of the touchscreen malfunction, try to disassemble the smartphone into parts on their own (which ultimately leads to disastrous results) or give a lot of money for repairs.

In our article, we will answer the question why the phone sensor does not work: we will give the main reasons and tell you how to act in each case.

The most common causes of sensor failure are:

Display dirty

Water ingress into the housing

Contact oxidation

Incorrectly glued protective glass or film

Mechanical damage to the sensor

Sudden temperature drop

Breakdown of the matrix loop

Software malfunctions

Let's look at each reason in turn.

Reason 1: Dirty display

If the touchscreen surface is not coated with an oleophobic coating, over time the display becomes greasy, which interferes with the conduction of electrostatic signals from fingers. In the best case, the sensor works every other time, in the worst case, it does not react at all to the user's touches.

Solution

Reason 2. Water inside the case

If, after walking in the rain, you find that the sensor on the phone does not work, most likely water has got inside the case. You can often notice that the sensor stopped responding to touch after the smartphone was held in wet hands for some time.

Solution

Dry your smartphone without taking it apart. The most affordable tool will be a cup of rice, in which you need to put your smartphone for several hours. You can read more about all the ways to dry your phone in the article "What to do if the phone fell into water."

Reason 3. Contact oxidation

If after drying the phone the sensor of the phone has not been repaired, it is possible that the contacts have oxidized due to moisture getting on them.

Solution

Careful cleaning of the contacts, preferably in a repair shop, will help.

Reason 4: Incorrectly pasted screen protector

When gluing a protective glass or film, it is very important to follow the instructions clearly. Otherwise, air bubbles and dirt may accumulate under the surface of the plastic or glass panel. Because of this, the sensor loses sensitivity.

Solution

Carefully remove the film or glass from the screen and stick on a new protection. We recommend using our instructions in the article "How to stick a protective film on the phone".

Reason 5. Mechanical damage to the sensor

Perhaps the most common cause of sensor failure is cracks, scratches or chips as a result of a smartphone being dropped. Also, very often the integrity of the touchscreen is violated due to the fact that the user carries a smartphone without a protective cover in a pocket with keys or coins.

Solution

Before you repair the sensor on your phone, it is important to determine the nature of the damage. If the scratches are small, you can try to polish the smartphone screen yourself. With sufficient knowledge and skills, the user will be able to replace the touchscreen without leaving home. However, it should be remembered that any interference with the integrity of the smartphone can lead to even more serious damage.

Therefore, the simplest and most obvious solution, in this case, is repair in a service workshop.

Reason 6. A sharp temperature drop

Sometimes a phone sensor loses its sensitivity after a sudden change in temperature has occurred, for example, a smartphone has been brought from a frost into a warm room, or vice versa. After that, the touchscreen reacts to touch every other time and not over its entire surface.

Solution

Rebooting the phone usually helps. Also, after that, it is recommended to wait a few minutes for the temperature inside the gadget to return to normal.

Reason 7. Breakage of the matrix loop

The screen of a smartphone, as a rule, is a kind of sandwich of several layers. The touch panel is placed on top of the matrix, which is attached to the phone board with a cable. After dropping the gadget on a hard surface, very often the screen does not receive external damage, but the sensor does not work. In this case, this means that the cable has broken or moved away.

Solution

With advanced technical skills and special tools, such as screwdrivers and a soldering iron, you can connect the cable to a matrix or board. However, it is most reliable to carry out this procedure in a service center.

Reason 8. Violations in the work of the software

Even the latest version of the Android operating system is not immune to software bugs. As a result of a system failure, the screen is on, but does not respond to user touches.

Solution

If the sensor on the phone does not work due to a software error, try restarting the smartphone. If this does not help, the most reliable way to restore the sensor's performance is to take the smartphone to a service center. Of course, a system crash can be fixed by flashing the phone. However, it should be remembered that this procedure entails even more serious disruptions in the operation of the smartphone and the automatic removal of the gadget from service.

How to choose a smartphone to avoid sensor damage

Of course, not a single modern gadget is immune from the breakdown of the touchscreen. Many users practically do not release their smartphone from their hands throughout the day. Therefore, it is not surprising that various external and internal loads can lead to sensor failure. But is it possible to minimize the risk of disruption of the touchscreen? Of course!

In recent years, smartphones in a metal case with a built-in protective glass on the screen have become increasingly popular. And the point here is far from a spectacular appearance. In this case, the reliability of the gadget comes first. The metal case withstands more external loads, high-quality assembly helps to avoid the risk of moisture getting inside the case, and the protective glass prevents scratches that cause the sensor to stop working.

However, it is widely believed among users that metal rugged smartphones cost a lot of money. Especially if you don’t want to make allowances for underestimated power and performance.

However, in today's mobile phone market, there is a brand that tirelessly proves that power, reliability, safety and affordability can easily be combined in one model. The British company Fly has been steadily gaining recognition of users since 2003 thanks to a combination of high technology, bold design solutions, quality components and affordable prices in each model.

The most striking novelty of the summer of 2017 was the Fly Selfie 1 smartphone - one of the most interesting in technical and design terms.

The thin and light metal body of the gadget is made of brushed aluminum. This material conducts heat well, so even during an active load, the phone's sensor does not overheat. The bright and contrasting 5.2-inch 2.5D IPS screen is covered with high-strength Panda Glass, so the display is not afraid of keys, lighters, coins and falls.

In addition, Fly Selfie 1 incorporates such high-quality components as an excellent front and rear camera - both 13 megapixels; a powerful 1.25 GHz quad-core processor, a capacious 3000 mAh lithium-polymer battery, a fingerprint scanner and an LTE 4G module.

Returning to the issue of affordability, it is important to point out that the price of a smartphone that looks and works like a full-fledged premium flagship is only 8990 rubles!

Now you know why the sensor on the phone does not work, what to do in each case, and how to prevent possible damage. It is easy to see that the most common solution to a sensor problem is repair in a service center. It is important to point out here that Fly guarantees high-quality after-sales service for its phones and gives a one-year warranty for all models. You can find out the location of the service center in your city on the official website of the brand.

It is running Android. The touchscreen (sensor) works by itself, it works some time after pressing, it tupits, lags, does not work correctly. What to do and how to fix?

Many users face the problem when phone either android tablet starts acting up. It seems that it didn’t fall anywhere and didn’t “water” with anything, but it doesn’t work the way it should.

For example, the device has problems with a touchscreen, i.e. the touch input (“sensor”) does not work correctly. The reason for this may be:

1st: Software failure- i.e. the problem is a software glitch

2nd: hardware failure- i.e. the problem lies in the "hardware" (i.e. - replacement or restoration of spare parts of the gadget is required)

However, do not rush to get upset - in 90% of cases with problems in the work of touch input (touchscreen) smartphone or android tablet is to blame software failure, which you can fix on your own.

Fixing a software bug:

Method 1. Pretty simple - go to "settings", find there "backup and reset" in which you choose full reset settings to delete all data. Be careful, using this method often turns out to be effective, but it entails deleting all photos, contacts, passwords, music, games, videos and, in general, all information stored on your smartphone e or tablet e. Therefore, first save everything you need by connecting the gadget to your computer. If this method does not suit you, or if the problem persists after it, see Method 2.

Method 2.

Based on solving touchscreen problems phone ov and tablets based on Android by introducing additional software. Utilities that control all processes inside gadgets. Today, there are quite a few of them, however, the fewer functions an application contains, the more, as a rule, it is effective. Best of all, it controls the system functions, corrects, and fixes all possible settings and synchronization errors, a small, easy-to-use, free utility for Android devices. You can download the application from Google Play and see its additional options in the description. After installing the application, it remains only to launch it. Further, from you, in principle, nothing more is required. The application will take full control of the device functions. (By the way, among other things, the gadget will start charging 20% faster, and its performance will also increase significantly, which will affect the loading and operation speed of all applications, games, and the system as a whole. On average, after scanning, the system works 50% faster.)

In addition, it is worth cleaning the system with a NORMAL antivirus. Best of all, it copes with this task kaspersky antivirus , which you can download. Unlike the “multi-cleaner”, Kaspersky Lab’s software is paid, so if you don’t have the opportunity to install such protection, you can skip this step ...

Method 3.

Changing the device software, or, as it is also called "re firmware ". This method, as a rule, requires certain skills and is solved by contacting the Service Center. For the independent implementation of this task, you need to contact the manufacturer's website of your device, download the utilities necessary for the firmware and the firmware itself, and then reinstall it on your gadget.

If none of the methods brought results, unfortunately, you will have to contact the Service Center for repair of your tablet a or smartphone a.

The touchscreen (sensor) does not work well on an Android phone or tablet. The touchscreen (sensor) works by itself, it works some time after pressing, it tupits, lags, does not work correctly. What to do and how to fix?

Screen problems with the Samsung A3 are not uncommon. Especially often, users observe a complete failure of the touchscreen, which either does not respond to touch at all, or responds to commands every other time. Some issues may be related to software glitches. But it also happens that individual components of the hardware have become unusable. In this case, to resume the correct operation of the touchscreen, you will need to replace it.

Why is the sensor not working on Samsung a3

Many people face the problem when the sensor does not work on the Samsung a3. Let's see what factors or failures can lead to a malfunction of the device.

The most common problems:

filling the cache memory of the smartphone;
freezing of the device associated with software failures;
mechanical damage to the screen;
low battery or swollen battery;
departure of the touchscreen cable, which occurred due to the fall of the smartphone;
oxidation of contacts on the motherboard associated with the penetration of moisture into the device;
failure of the display controller chip;

Incorrect operation can manifest itself in the failure of the sensor in specific places, a slow response to touch or a complete refusal to execute commands, or, conversely, spontaneous operation.

Testing the sensor

To test the operation of the component, you can use the built-in command *#7353# and select the "TSP Dot Mode" option. After that, you need to press in different parts of the screen and trace in which areas the device does not work. Such an event can help identify the cause of the problem.

Samsung Galaxy a3 sensor not working: troubleshooting

If the sensor does not work on the samsung galaxy a3, the first thing to try is to rule out a system failure. To do this, you need to reboot. If the event is unsuccessful, try removing the battery after turning it off and inserting it back after 5 seconds.

Didn't help again? Clean your smartphone with a special antiseptic from dirt and dust. Sometimes the touchscreen does not work correctly due to plaque or air accumulated under the glass. Also try to re-glue the protector, guided by the manufacturer's recommendations.

Scratches on the display

If the sensor is not working in some places, try to look closely at the display and remember if you have recently dropped your smartphone. Detection of cracks with a 95% probability indicates that you need to carry out a complete replacement of the part.

We change the part on the Samsung Galaxy a3

Failed to set up the sensor using the above methods? Then the part should be replaced. In the GadgetParts online store, you can purchase the necessary part to restore the functionality of your device.

It should be noted that for replacement you will need to buy a whole module, consisting of a screen, a touchscreen and a frame. It is also recommended to get a protective glass to minimize the risk of mechanical damage to the screen.

You can install the purchased part yourself. If you are not confident in your abilities, contact the service center.

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