Chosen Solution

I recently bought an iPhone SE with a dead battery. I replaced the battery, booted it up, and it works great! However after awhile I came upon the issue of the screen randomly glitching out (pic attached) and eventually restarting. It will repeat this sometimes multiple times while trying to restart. It’s most easily replicated when put under load.

Any ideas?

I had a similar problem. After investigating under Microscope I found out that one of the capacitors on the PCB board are loose. I have re soldered and problem fixed! :)

Hi James, I would first check the display connectors, disconnecting them, making sure there are no particulates on the connectors, and reseating them. I would also check on the screw tightness of the logic board screws in step 17 of this guide: iPhone SE Logic Board Replacement