iPhone 6 in boot loop after screen replacement

The same thing happened to mine when i replaced my screen and put a new cable for my proximity sensor and front camera. I didnt know what to do, i tried so many things and it finally worked when i tried my old sensor and camera cable with my new screen. I got a new cable because my sensor wasnt working but turns out the new cable didnt work at all. It may not work for you but it did work for me and its worth a shot.

Exact same problem. Took the front camera out of broken screen. Replaced it in the new screen and boom... everything works perfectly!! It was a bad front facing cable. This is the last time I buy a full assembly from ifixit.

Had the same problem with my replacement digitizer from ifixit. I swapped my front camera, speaker and ambient light sensor and it fixed it. Works great now.

Its acting like it has a battery connection issue or an issue with the battery gas gauge circuit.

"I am currently having this issue... The iPhone would show apple logo then immediately go to dfu mode then power off and repeat. I have now plugged the device into the wall using my iPads transformer and with that in place the device does not power off now but it stays stuck in dfu mode now. I try to put the device in restore mode with iTunes logo but I am getting no luck.

Here are some possible explanations:

1. The juice of charge doesn't surpass a certain % just stays at the level of being able to just power on

(I tried this with battery disconnected from MB and was getting same result: power on-dfu-off

2. Completely corrupted software.

Right now. I'm leaving the device in dfu mode with the iPad charger. Hopefully will be able to restore. Will let everyone know soon.

UPDATE:

SUCCESFULLY OUT OF BOOTLOOP! USE AN IPAD CHARGER!"

Do you still have the old screen? If so try that again to make sure its not the screen. Also what i would do is unscrew the LCD ribbon plate and see if that changes anything. Its not a blue screen so luckily its not a issue with the mobo (I hope for you). If its still the same issue you can get to DFU mode by unplugging the Battery and holding the home button before plugging it back in.