Original post by: Carlos Oulman ,
I’m going to guess either you have a bad screen or something is not plugged in correctly. When components of the phone, screen, cameras, home button are not connected it will cause the device to boot loop like this. It could also be a bad battery. Even with it plugged in, Apple devices act goofy when they have bad batteries. The only other reason this would be happening if the other solutions don’t work is that there is something wrong with the logic board or the software.