Chosen Solution

the phone screen touches by its self

So there’s actually a few things that can be causing this issue with your device. The primary suspect could be an issue with the phone’s software. Make sure that the device is up to date. If anything else a forced reset of the device can help the issue.The second suspect issue could be overheating or extreme cold. Definitely see if the issue continues if the phone is in a neutral environment.If your phone is using a screen protector, definitely try removing the protector and see if the issue continues. If all else fails, then it may be a defect in the screen that could be causing the issue. This would mean that the a replacement screen would be needed.