Kindly use only Samsung prescribed screen protector guard. If you like please accept it's as a solution it's help to other users also, click on 3dots in my reply section and click on accept solution. Thanks.
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Please follow these easy troubleshooting steps which may help in resolving this issue.
● Kindly check if the device's touch screen is physically damaged: The phone touch screen could stop working due to physical damage.
● Physical damage: The touch screen is broken or damaged. High temperature, cold, moisture, magnets, and static electricity can all damage the touchscreen of Android phones. If your screen is damaged, you need to carry your device with its ''original accessories'' to the ''Samsung authorized service centre''. If your screen is not damaged, Restart the phone by pressing the Power button and then tap on Restart. Note: If you use the Fingerprint security feature, the phone will require your backup password to unlock after rebooting.
● Review touchscreen tips and tricks. Certain factors may affect how well the touchscreen on your device performs. Please keep the following in mind when using the touchscreen:
• If a third-party screen protector or accessory is attached, the touchscreen may not work properly. In particular, it may not work well if there is dust or air under the protector, if two or more protective films are attached to the screen, or if the protective film is peeling near the edge of the screen. Remove the screen protector or film if it is peeling or has debris underneath it. If you are keeping the screen protector or film, you can enable the touch sensitivity option to help with taps and touches. Open Settings, then tap Display, and then tap the switch next to Touch sensitivity.
• The touchscreen may not work properly if you wear gloves, have dust on your finger, or touch the screen with fingernails or a ballpoint pen. It may also not work if a conductive object, such as a coin or key, is close to the screen.
• If the screen is wet, the touch sensor may not work properly. Even for waterproof models, some touch functions may not work if the product is used in water. Gently wipe the front and back of your device using a lint-free, soft microfiber cleaning cloth or a camera lens cleaning cloth. Do not apply too much pressure when cleaning the device.
• If you are having issues with the S Pen, refer to our S Pen troubleshooting.
● Restart your device. Restarting your device can help solve minor issues. Restarting will vary depending on the model:
• On devices with a Power button: Press and hold the Power button, and then tap Restart. Tap Restart again to restart your device. • On devices with a Side button: Using two fingers, swipe down from the top of the screen to open the Quick settings panel. Tap the Power icon, and then tap Restart. Tap Restart again to restart your device.
If the touchscreen is not working at all, you can restart your device by pressing and holding the Volume down button and the Power button (or Side button) simultaneously for 10 seconds. Tap Restart, and then tap Restart again to confirm. Once it turns off, you can turn your device back on by pressing the Power button or Side button again.
● Check your charger. If your charger is damaged, it may not supply power to your device, which may cause the touch screen to malfunction. In this case, use a different, undamaged charger to prevent this issue. It’s also a good idea to avoid using the touchscreen when the device is charging.
Note: To complete Steps 4 through 6, you can try connecting your device to a computer or monitor. This will allow you to navigate the device even if the touchscreen isn’t working.
● Disable gestures: When using the full screen gesture function, touch input may not be possible because the touch is recognized as a gesture. To stop this from happening, disable the full screen gesture function. Open Settings, tap Display and then tap Navigation bar. Tap Buttons to disable full screen gestures.
● Disable Touch sensitivity: If the Touch sensitivity setting is turned on when no protective film is used, the touchscreen may respond too sensitively and therefore malfunction. To disable the Touch sensitivity feature, navigate to Settings, tap Display, and then tap the switch next to Touch sensitivity to turn it off.
● You can reset your device by following the steps: 1. Kindly create a data backup of your device via the SMART switch mobile application or http://www.samsung.com/in/support/smartswitch pc suite. 2. Remember the Google password before resetting the device because it is required during initial setup. 3. If you do not remember, then advise to reset (Forgot password) your Google account.
Path: Settings> General Management>Reset>Temporary cloud backup or External storage backup>After backup tab on Factory data reset to reset your device to its factory default settings. This will erase all data, including files and downloaded apps.
If the issue still occurs and regarding purchasing screen guard/ protector, kindly visit the authorized Samsung store or service centre, they will provide you with a Samsung-approved screen protector. You can find the store and service centre location by following the links:
