Press Down On The iPhone 6 Logic Board

1. Firmly press down on the display of the iPhone 6 where the logic board is located. The iPhone 6 logic board is located in the upper right-hand corner of the display (see the image above for a guide).
2. Be careful not to press too hard, as you could crack your iPhone’s display.

Why this works:

Sometimes when you drop your iPhone, the small, thin cables connected to its logic board can be jarred loose. When this happens, the touch screen can stop working, the display can stop functioning, and much more.

By pressing down on the logic board of your iPhone 6, there’s a chance you could reconnect the cables and get your iPhone functioning properly again.