How do I get my Iphone 4S screen to stop flickering and jumping?

My 15 month old Iphone 4S's screen has recently starting jumping and flickering and will not stop.

First began in my camera but would stop when I turned the camera to the front to see my face, then when switched back to the other side it would begin jumping again, (roughly a month ago). Then it started happening in any apps that involved my camera, snapchat, instagram, etc. today.

Now, my screen always flickers and jumps in all apps and when on my home and lock screen.

IOS is up to date.

No cracks on screen.

Continues to do so even after resetting and restoring iphone, and changing my brightness up and down.

Background moving is turned off.

Flickering is worse at the bottom of the screen.

Screen was replaced six months ago.