Touchscreen freezes occasionally and random touch screen input

[Alex.A]

Hi there and welcome to the community!
Did you already try all the other tips that were given in the threads that I mentioned in my first message, to see whether it solves your problem?
For example:

@Alex.A

As it is written in the troubleshooting guide of Fairphone, in this case, perhaps you can try:

• Open your phone dial pad
• Enter *#*#66#*#* in the same way you are entering a phone number to make a phone call. Once the last character is introduced, the Service Menu appears showing you three sub-menus.
• Select Service tests > Test Single > Touch screen .
• Use your finger to draw freely on the screen and check if you can do it in each part of the screen.
• If you can see blank areas in your drawing, your display is partly insensitive to touch