How to fix ghost touch issue on iPhone XS Max?

Replace the screen at Apple or Authorized Apple Service provider. The most common reason for the ghost touches is a cracked screen, but the digitizer can certainly fail without the screen cracked. Apple can also perform diagnostics on the phone first to identify any problems.

There are no step by step instructions to fixed a bad digitizer yourself.

The screen on your iPhone XS Max is defective and it needs to be replaced.

Make an appointment at the Genius Bar / Apple Store or take the phone to an authorized Apple service shop.

You can find a list of authorized service locations in your area using this link:

https://locate.apple.com/