Back button doesn't work. Why touch buttons on an Android phone do not work: how to solve this problem

Menu button on the phone android samsung and many others, maybe sensory, physical and of course, like almost everything, sometimes it doesn’t work.

If it is physical, it is often solved by cleaning the contacts. There seems to be a video on YouTube on how to do it yourself.

If your menu button is part of the sensor and does not work, then it is worse than if it were physical. Such repairs are more expensive.

However, you can try to calibrate the screen of your smartphone - maybe it will help and there will be no need for repairs by specialists.

What to do if the menu button does not work on your Android smartphone

From the first words I will immediately say that you can fix the problem yourself broken button the menu is not simple.

However, you can live without it, as well as some other “home” and “back” ones, if you emulate them programmatically.

To do this, you need to get root rights and install the “Floating Soft Keys” program. Then you can adjust the buttons to return your device to proper operation.

Sometimes you may need a new touchscreen, although it may take a while to find one. certain models it can be difficult.

Sometimes the problem can be solved without opening the case - by duplicating the function keys, but this will not work on all Android devices.

To activate such a function, you need to write the line “qemu.hw.mainkeys=0” at the very end in /system/build.prop, but superuser rights are required.

The result should appear additional functionality above the faulty button. The Soft Buttons application can simplify this procedure.

There is a program that does not require root rights, which allows you to duplicate phone buttons. One of these “Back Button” is free with many settings.

After installation, translucent icons appear on the display with function keys: Menu, back, home and screen rotation. They can be dragged to a convenient location, only the screen is reduced by the height of the icons.

Reasons for menu buttons not working in Android

The reason may be software or hardware failure. Fortunately, 90% of problems in software glitch, which is solved independently.

To do this, go to “settings” and click on the section “ backup and reset." There we choose full reset settings with deletion of all data.

Naturally, before doing this, we separately save everything we need (you can do it on your computer and then transfer it back to your phone).

The last option is “reflashing”, which requires skills and contacting a service center.

If the description above did not bring a positive result, then you don’t want to, but you most likely cannot do without a service center. Good luck.

The touch screen of a smartphone provides the user with much more control over the phone than regular phone with physical buttons.

But, unfortunately, failure of touch buttons is not such a rare occurrence, and in terms of reliability they are in no way superior regular buttons. Find out what to do if they don't work touch buttons in a smartphone and why this happens.

The simplest reason is dirt.

The sensitivity of the sensor in a smartphone directly depends on its cleanliness. If you touch the screen with dirty hands, dirt particles stick to the glass and then reduce the sensitivity of the sensor until it fails completely.

To return the touch buttons to their normal state, just wipe the screen with a damp cloth designed specifically for cleaning monitors. You can prevent frequent screen contamination by using protective film, which will not only protect against unwanted substances sticking to it, but also protect against scratches and small cracks.

Inaccurately applied film

Applying a protective film is not an easy task. There should be no air bubbles left underneath, otherwise some touch buttons will not be able to fully function.

Many phone owners undertake to stick the film on their own, but subsequently are forced to contact service specialists, because due to poorly glued film, the sensitivity of the sensor deteriorates and the buttons do not work.

Temperature imbalance

Failures of touch buttons due to inappropriate temperature are most common in winter, when the thermometer drops below 10-15 degrees below zero. The phone's LCD screen is sensitive to low temperatures and if overcooled, it may stop functioning as required.

If the exposure to low temperatures was short-lived, after warming up the phone itself will quickly return to normal operating performance.

The touchscreen has moved or is peeling off

If the phone is used in hard mode, and its owner constantly exposes delicate equipment to various negative influences, touchpad, or touchscreen, may peel off from the screen in some places. If this happens at the bottom of the smartphone screen, the functional touch buttons may stop working.


To get rid of this problem, you should warm up the touchpad with hot air to soften the special glue that attaches it to the screen. It is better not to try to do this yourself, so as not to worsen the situation even further. Contact our service center technicians who have experience and necessary equipment for such manipulations.

Software glitch

If the touchpad is sparkling clean, and even the most careful inspection does not show any damage, but the touch buttons still do not work, the smartphone software may have failed. Reboot operating system by turning off the phone and then turning it on again.

This simple step usually eliminates occasional errors. If this does not happen, remember - perhaps before the touch buttons failed, you installed a new application or updated one of the already installed applications. Sensor failure can be caused by a software conflict between old and newly installed utilities. Uninstall the new application and restart your smartphone - it is possible that the touch buttons will restore functionality.

Viral infection

The widespread use of smartphones has forced hackers who write viruses to pay attention to this segment of software. Today, antivirus on a smartphone is the same essential piece of software as on a regular computer.

If you don't have antivirus protection, it is possible that the failure of the touch buttons is caused by actions malware. Download good antivirus and scan your phone, then mercilessly delete all files that seem suspicious.

Reset settings

If none of the above measures work, you are left to try the last remedy that is available. to the average user. Reset your phone to factory settings.


If the failure of the touch buttons was caused by any software reasons, as a result of the reset, all errors will be reset along with your personal settings, application updates, and even the applications themselves installed while using the phone. After the reset, the functioning of all elements of the phone resumes in the vast majority of cases.

Custom firmware

If you have installed the so-called custom firmware, then you should be aware that from now on the manufacturer is not responsible for its performance.

Often the consequence of such actions is failure of some functions. What’s most offensive is that you don’t even have anyone to file a complaint with. The only way out is to return to the factory firmware, which can be downloaded from the website of your phone manufacturer.

Troubleshooting at home

A common cause of failure of all buttons is the smartphone being left in a damp place for a long time or a strong impact. In the first case, the contacts may have oxidized and the problem can be solved by cleaning them. In the second case, you will need to diagnose the device, which we recommend entrusting to the engineers of the HTC smartphone repair center. What to do if you want to fix the problem yourself, and the reasons for its occurrence, read below.

Solutions to the problem

1. Determining the state of the buttons. In order to understand how serious the problem you are facing is, you need to determine whether the bottom buttons respond to touch. To do this, you need to enable a function called “Vibration Confirmation”. To activate it, go to the “Settings” - “Sound” menu, and at the very bottom of the list that appears, check the box next to the “Vibrate confirmation” function.

Your smartphone should now vibrate every time you press the bottom buttons. If this happens, proceed to the next step. If not, try steps 3, 4 or 5 from these instructions.

1. Screen calibration. To do this, go to the “Settings” menu - “Language and keyboard” - “HTC Sense Input”.

Select " Additional settings" - "Calibration tool". After this, a sentence will appear on the screen that must be typed on the keyboard. Follow the green circle.

If you can’t calibrate the keyboard, or you do it incorrectly, then go to “HTC Sense Input” - “Advanced settings” - “Reset calibration”. This will return the screen calibration to factory settings. Then you can perform the calibration again.

1. Software update. The problem with non-working buttons may be due to outdated software on your smartphone. Update the software, this method often helps.

1. Soft reset to factory settings. Having previously saved all the data from internal memory smartphone on removable media Reset your device to factory settings. We recommend performing a reset only for those users who were unable to resolve the problem using the two previous methods. To reset the settings, go to the “Settings” - “Memory” - “Reset to factory settings” menu.

Then a menu will appear in which we select “Reset phone settings” - “Erase everything”.

1. Hard reset to factory settings ( this method will be useful for those users whose touch buttons do not work and have similar problems with the touch screen). First save all personal data from your phone to removable media. Now press and hold the Volume Down button. Without releasing it, press and hold the Power button. Release both buttons when the splash screen appears. The menu that appears is controlled using the volume down and up buttons. Pressing the volume down button select “Restore original settings” (English “ Factory Reset"). To confirm your choice of action, press the Power key.

If the above methods did not help you, make sure that you followed all the steps correctly and sequentially, try each step again. Also remember that often the malfunction bottom buttons HTC smartphones appears due to faulty display module or device hardware problems.

Phones Samsung Galaxy, especially the Samsung Galaxy S3, S4 and S5, are known for their problematic screens. Many users either have a blank screen, black screen despite the phone being fully charged, or unidentified dots stuck on the screen. If you just bought one of these models and are wondering, don't worry. In this article, we will tell you the reasons for these crashes, how you can get your data back, and how to fix the screens. The most common problem is that the Samsung sensor does not work. Let's figure out how to fix this.

The phone's touch screen does not respond to touch at all. What to do?

Samsung does not manufacture a defective product. But phones are exported to long distances all over the world. This may affect the operation of the touch screen.

Samsung phones are quite thin. The touchscreen controllers they use are scaled down in favor of phone size. This may affect their performance and durability.

There could be several reasons that caused the Samsung Galaxy screen problem. Depending on the problem, you can narrow down the causes of a faulty touchscreen.

I. Blank screen

This is a very common problem for all smartphones, not just Samsung Galaxy phones. This is usually caused by the following:

An application or function in your Samsung is frozen or frozen;

There is not enough battery to power the device;

Actual physical damage to the touch screen.

II. The screen does not respond to touches

Screen insensitivity is usually caused by a system failure, be it software or hardware. The software problem will be easier to fix. Here are some of the reasons for an unresponsive screen:

Problematic third-party application;

Your samsung phone Galaxy froze, hovered;

There is an error in one of the hardware inside the device.

III. Dead pixel

These unknown spots are caused by dead pixels, which were caused by:

Third party app keeps crashing;

Physical damage to the screen in a specific area;

The GPU is having problems with a third party application.

The manufacturer is defective, in this case, contact the warranty and they will replace your phone.

Samsung sensor not working problem or freezing problem can be solved by turning off the phone and turning it on again. Press and hold the Power button and Volume Down button for 7 seconds. The phone will be switched off. The problem will most likely be resolved after downloading it. If the phone does not respond, remove the cover and battery, then reinsert and turn on the phone.

Remove SIM Card

Shut down your Galaxy and eject Sim card. Now reinsert the Sim after a few seconds, turn on the phone and see if anything has changed?

Boot your phone into Safe Mode

This is another useful step to get rid of touch screen problems if it is some third party app that is causing the problem. Safe Mode temporarily disables everything third party applications, and if you are not facing the issue in this mode, it must be a third party application causing this issue.

To boot your phone into safe mode, follow these steps:

1. Turn off your device completely

2. Now press the Power button for a few seconds until the Samsung Galaxy logo appears

3. Then release the Power key and press the Volume Down button. The phone will restart.

4. Continue holding this button until the phone restarts.

5. He will show safe mode in the lower left corner of the phone.

Once you are sure that it is third party apps that are causing this problem, uninstall them by going to Settings > Application > Application Manager > swipe downloaded options > select the right application> Delete and finally click OK. If you have many apps, deleting them one by one may take a long time, so you may want to perform a factory data reset (explained below).

Clear Phone Cache

Another solution to the problem is to delete the cache. Here's how to do it.

1. Turn off your smartphone completely

2. Press and hold the Home button and Volume Down button, and then press the Power button

3. Continue holding the buttons and when the Samsung logo appears, release the Power button but hold the Home button and Volume Down button

4. When you see Android logo, release the other two buttons

5. The message “Installing a system update” will appear, followed by the recovery screen

6. To highlight “Wipe” cache partition", use the Volume Down key and press the Power button to select it.

7. Once this is done, use the Volume Down key again to highlight the “Reboot system now” option and select it using the Power button.

Give Your Phone a Rest

Samsung Galaxy touch screen malfunction can be stopped by preventing overload. The phone tends to freeze if it is overworked, unlike other phones that quickly heat up or drain the battery. It just freezes. Most users mistake the solution to the touch screen problem, when in fact most of the internal parts of the phone are at a dead end. This can happen if you play games or shoot videos for a very long time. Wait a while before using your phone again.

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Faulty GPU. If you use your Galaxy for gaming, your graphics processing unit (GPU) may be stretched to its limits. To clear these dead pixels, you need to clear the RAM cache, close everything running applications and reboot your phone.

Perform a Hard Reset

If you find that all the above steps do not resolve the issue - Samsung sensor not working, please try: hard reset. It will remove all files and apps from your Galaxy and return your phone to factory settings. Below are the steps to perform a hard reset:

1. Press the Volume Up, Power and Home buttons until you see the Galaxy screen.

2. Now leave the Power button but continue to hold the other two buttons.

3. Release the two buttons when you see the Android recovery screen.

4. Use the Volume Up and Down buttons to highlight options and the Power button to select.

5. Select factory data reset, which will erase everything from the device and then reboot the system.

The sensor does not work on Samsung - Hardware problems

Samsung Galaxy is relatively new on the market, but there are still many complaints about the Galaxy Touch Screen, as many people face such problems. It is definitely very annoying if your touch gives you slow response time or doesn't work at all.

Below are some touch problems Samsung screen Galaxy that its users encounter:

Problems:

• Click Stop Application
• Slow response
• The sensor does not work on some sections of the screen.

Causes of problems:

• The phone's cache is almost full.
• There has been some physical damage to your display screen that has partially or completely disrupted the phone's touchscreen function.
• Low battery sometimes also causes slow touch response.

Workaround:

1. Reset your phone.

2. Remove and reinsert the battery (after switching off). Be sure to allow a delay of at least 5 seconds before inserting the battery.

The hardware solution for Samsung Galaxy is divided into two sections:

• Touch screen problem
• Problem with Button Touch feature

Touch screen problem

1. Disconnect the connectors and check the display connectors.

2. Now clean the onboard connector and display connector. After cleaning.

3. Re-solder each pin of the on-board connector

4. Using the Multi Meter, check each connector component. Overheat faulty connectors. If they still don't work, replace them. Check again

5. If it still doesn't work, try any other good LCD screen, as sometimes the problem is with the entire LCD screen not just when touching your phone.

Problem with Button Touch feature

• Connector for connecting a function button and a connector for charging. Now check.
• If it still doesn't work, check the charging port if this is problematic. Change it as there is nothing you can do in this case.

The above steps will surely help you solve the touch screen problem from your Samsung Galaxy in the most in an efficient way. If your touch screen is giving you problems, then your phone has completely become a crippler as you will not be able to do anything on your phone (not even unlock your phone in any way).

I replaced the display on my phone and now Samsung's sensor doesn't work!

1. If you have a white or all black display, start by performing a soft reset on your device. If your screen still won't work after resetting...

2. Try the repair again from the very beginning. In the step where you connect the shield to your main board, check original screen to make sure it is still working.

3. Blockage on your display is a sign of too much pressure on the screen caused by transportation or during installation. Open your device again and make sure that none of your internal components does not cause pressure.

4. If you see lines down your display or only partially working touch functions, then you may have a faulty or broken part.

Samsung Galaxy screen not working is a problem that can be prevented. Here are a few useful tips to protect your Samsung:

For proper protection For Samsung Galaxy display panels, use a really good protective case. This will prevent the screen from being damaged, cracked or scratched after a fall.

Sometimes your phone has manufacturing faults. So to keep your phone and you protected, make sure you maintain your warranty until it expires. This will ensure that you get the support you need from Samsung unless the problem is caused by your negligence.

Install reliable antivirus software to protect your system from malicious attacks.

Make sure you read the reviews before downloading any apps. This great way find out that the application is viral and will cause problems for your Samsung Galaxy. The best way to do this is to filter reviews according to reviewers who use the same device.

Try not to play games with too much graphics as this will expand the capabilities of your device. Either play one game at a time or play in a short period of time.

Do not overcharge the battery at the same time - this will increase the likelihood of your phone overheating, which can damage your phone's components.

Although a Samsung Galaxy screen problem can be caused by several reasons, there are an equal number of ways to counteract them. Therefore, there is no need to panic - this article is a great example for solutions to your problems.

If you have not solved the problem - Samsung sensor does not work, please let us know in the comments, we will help.

Everything always breaks unexpectedly. Dropping a phone on a tiled floor is an unfortunate accident; drowning it in a bathtub is a banality that occurs more often than it seems at first. Statistics of requests to service centers contains many complaints about accidents from the “it fell and broke” series, even more often than drownings. At the same time, you should not expect that the very first fall will take away the touch substrate or even the screen itself - in most cases, the consequences of unfortunate accidents do not look so destructive. Among other things, this is a sudden inoperability physical buttons"back, home and menu." If this problem happened to your phone, but you still don’t have money for repairs, don’t worry. There is a relatively simple solution to this common problem. Now we will teach you how to enable on-screen buttons on your smartphone if the physical ones no longer work.

For everything to work out, you need to get Root rights. Administrator access to the depths of system files is sometimes difficult to obtain. But with the advent of apps that get the access you need for you, you no longer need to read multi-page instructions. Just install Kingo program Root to your computer and connect your phone. The only thing you need to do while the program is being installed is to enable “USB Debugging” in the phone settings, “Security” section. That's all. Clicking big button Root in the interface Kingo Root , activate administrator rights.

Step two looks a little more difficult. You will need to download from Google Play(or a little... alternative sources) Root program Explorer. Install it on your smartphone. Run this application, find the System directory, and in it - build.prop. If such a file is not visible in the system directory, it doesn’t matter. IN top corner programs have an ellipsis - tap on it to open a submenu. In the program settings, check the “Show hidden files" The loss will be discovered immediately.

In the left corner Root Explorer There is one more item we need - r/w. Tap it once and confirm your choice. This action will enable the ability to edit system files. Now tap and hold build.prop on it. Top menu will change and from the drop-down list (in the same ellipsis) you will find the sub-item “open in a text editor”.

Scroll open file to the very bottom - all these long lists of settings are not needed yet. At the very bottom, add the line qemu.hw.mainkeys=0. Save the file and restart your phone.

Done, three on-screen buttons have appeared at the very bottom of the screen - similar to what you can see on the screen of any tablet. And after repairing the physical buttons, it will be possible to hide the virtual ones back by replacing the line qemu.hw.mainkeys=0 with qemu.hw.mainkeys=1 and rebooting the device again.