I am having a jumping screen extremely bad. Even after a factory reset all, it still does it. It also looks jumpy when I try to open the phone with the FaceID. It has gone as far as to not let me use my photos for the lock or home screen. Best Buy won't help because I missed the 14 day window. Verizon is trying, but they are making me wait to ensure it is not my iCloud having a bug with it. I cannot place the phone on speaker and transition to another app for use with out the window "sort of minimizing" and causing the whole screen to lock up while the call is still ongoing.
Any help would be great. I just bought this phone on March 8.
That sounds horrible and not at all what we are describing here. Our issue is just cosmetic, what you are describing sounds like a massive problem (definitely not related to iCloud, wtf).
Go to apple.com/retail, sign up for a genius appointment at the closest Apple Store to you. Your phone is still under warranty and Apple will gladly help you by either fixing or replacing the phone.