Clean the touch screen and screen protector. Sometimes, a touch screen will stop responding due to built-up dirt and grime or problems with the case or screen protector. Since this is pretty easy to either deal with or rule out, it's a good idea to thoroughly clean your device if a reboot doesn't do the trick.
Users have found that their Android stops working when exposed to high temperatures, moisture or extreme cold. However, the issue could also be software based. The phone touchscreen may no longer respond when the device needs a firmware update or when too many apps consume its memory.
If your iPhone's touchscreen is not working, first try to force-restart the phone. Make sure your touchscreen is clean and dry so it can sense your fingertips. Remove cases or screen protectors that may be interfering with the touchscreen.
There are several reasons why an iPhone, Android, or another smartphone might freeze. The culprit may be a slow processor, insufficient memory, or a lack of storage space. There may be a glitch or a problem with the software or a particular app. Often, the cause will reveal itself with the corresponding fix.
Usually, it's a physical problem with display components, like a faulty digitizer or a cracked screen. In some cases, dirt underneath the screen or water damage causes ghost touch.
There's an Accessory Connected to the Lightning Port
In rare cases, connecting an accessory to your iPhone's charging port can mess with the touchscreen. To fix this, disconnect all Lightning accessories, including your charger, headphones, power bank, and USB-C accessories. See if the screen starts working after that.
1. Press and hold the volume down button and the home button simultaneously for 10-15 seconds. This should force your Android to restart. 2.
In ghost touch, your smartphone responds to some touches that you have not made. Such touch could be a random touch where a part of the screen or the whole screen gets frozen. Usually, this issue occurs when you have put your phone on charging and, in between, you are using it.
Touch-screen test: *#*#2664#*#*
Input *#*#2664#*#* into the dialer to test the touch screen's performance. This test is useful if you've noticed your touch isn't functioning as it should. It's also great for testing a phone for resale because you want to make sure there aren't any dead zones on the touch screen.
Typically, the 'unresponsive iPhone screen' issue happens when your iPhone's digitizer (the iPhone part that allows touch) stops functioning. Rebooting the iPhone can be a simple but effective way to fix most unresponsive screen issues. However, there are other advanced fixes to solve the problem.
As the name suggests, ghost touch is when the screen seems to react to non-existing touches, and the application starts functioning without you doing anything. Ghost touches are bothersome and may necessitate having your iPhone repaired by Apple.
If you observe lines, black spots, screen flicker, or discolored areas on your screen, the LCD is damaged. If the screen entirely doesn't light up, you have Phone LCD problems.
Depending on the device and Android version, the location of this setting varies but is generally at Menu > Settings > Language & keyboard > Touch Input > Text Input. Under Finger touch precision, tap Calibration tool or Reset calibration.
Ghost touch problems aren't always due to hackers, but can be indicative of malicious activity.
It could possibly be. I once had a phone that was starting to get “ghost touches” and open my phone when I wasn't using it, but it was a hacker and they learned my phone code and changed it so I couldn't get in.