Hey @becky_l1
welcome to the forum and sorry for the late reply.
The issue you describe is not a known software issue so I guess it’s a problem with the hardware.
You should first try to dismount your screen (for help on this see here) and carefully clean the contacts. Then put the screen back in place and make sure it fits well (e.g. there are no gaps which disappear if you put pressure on the phone).
If that doesn’t help you should contact support to get a replacement.