"Will not power up after replacing front screen with home button"に関する回答Hi Robert, Is the device powering up ? When plugged into power or computer you can hear it chime or vibrate? There is no one solution to fix any problem, we'll have to gather more info to find the culprit/ problem .
"iPhone 6 front camera & ear speaker not working after screen replaceme"に関する回答As others have stated above, in most cases it's the flex cable, if that is the case just replace. But if your like me and enjoy hot swapping parts ( very dangerous for the health of the parts being swapped) You'll simply need to restart the device. From my testing I noticed that the camera and earpiece don't register until the device is restarted. Sounds so simple... but it works every time for me!