Touchscreen has gone crazy

Hi, This afternoon the screen on my FP2 started behaving very strangley. Nothing had happened to the phone before to prompt this. I was halfway through typing a message when all of a sudden I couldn’t use the keys on the far right of the screen - including send and question mark etc.
I switched it off and on again and when i came to unlock it it was automatically scrolling through the numbers 3, 6 and 9 and kelp locking me out for 5 incorrect tries. i wasn’t even touching the phone while it was doing this.
I have removed the screen and reattached it it just i case that was causing the problem, but it still persisted.
Any ideas?

A post was merged into an existing topic: Parts of the touchscreen don’t work - See first post for troubleshooting