Chosen Solution
Hello everybody, I have replaced the flex connector and the screen of my iPhone 6 at the same time. After fulkly reassemble it, I tried to turn it on and it worked great. I proceeded to charge the battery with the iPhone switched off and the screen never worked again. I have tried to replace the old screen but nothing worked. I know that the iPhone is on because it vibrates when I change the vibration switch position and also I connected it to a TV with the lightning to hdmi cable. Thanks in advance
Turn the phone off, then turn it on again. Shine a flash light on the screen and see if you can see an apple logo. If you do, you have a no backlight issue. That can only be repaired via micro-soldering (replacing backlight circuit components) on the logic board. Some mobile phone repair shops offer this service. In rare cases it could be a defective display but no backlight is usually a board issue.
