Press and quickly release the volume down button. Press and hold the side button.
If your Android phone is frozen or unresponsive, restart the device by pressing and holding the power button until the phone reboots. If that doesn't work, you can force restart the phone by simultaneously pressing and holding the power button and volume down key.
Hold down the power button for 15 to 30 seconds, until the phone restarts. On Samsung devices you might need to hold down the volume-down button and power button for 7 seconds instead.
Press and quickly release the volume up button. Press and quickly release the volume down button. Press and hold the side button until you see the Apple logo.
Using recovery mode
This method works on Android devices only, for this, you need your Android phone to be turned off. Simply plug in your USB cable and keep holding down the volume down/volume up button to enter the recovery mode. Here when the menus appear, simply tap exit, and reboot the device.
There are mainly two reasons for your phone and tablet touch screen not working. Either the touch screen might have been damaged, or the device has technical issues. If you drop your phone and get stuck against any object, the touch screen's connectivity can get damaged.
Reset iPhone in Recovery Mode
There is a final way you can try if force restarting is either not working. That is put your iPhone into recovery mode and reset it with iTunes. This is a final method you can try since iPhone data will be erased after reset.
Your battery is low. Your iPhone is running out of storage space. Certain apps are incompatible with your software. Your operating system is outdated.
Please note: a hard reset will completely erase all the data, settings and content on your smartphone, returning it to the original factory settings. We strongly advise that you back up your device before a hard reset.