So I changed a screen on iPhone 7 Plus... everything works (apart from ear piece) as expected until the final step .. when i connect the flex cables, everything is working fine including touch ID, camera, vibration and sound. But as soon as I put the screen back in the final position for the two bottom screws... there is no vibration, no sound, touch Id works but no home button.. any idea?
As far as the home button issue, there are some suggestions in this answer:
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touch id and home button works as long as the screen is not back to the snapped position... as soon as i snap the screen on for the last two bottom screws, the vibration, sound and home button doesn’t work... touch id works all the way through with no issues..
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sounds to me like you may have a damaged home button flex cable. check for tears where the flex bends when putting the screen down.
as for the ear piece, the front camera flex is easily damaged when removing it from the old screen(where the small black square of double sided tape sits.)
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but if the home button flex cable was damaged, it should not work at all right.. the phone works perfectly before clipping it back in .. the problem only arises when i place the screen and try to screw the bottom screws
I don't mean the home button its self but the flex that runs from the home button through the screen that connects to the logic board. Where it bends through 180deg to the connector on the logic board can easily be torn. we see a lot of these on phones brought into the shop. a new screen will normally sort it.
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Check so the metal part on the screens flex cables dosent hit the speaker or the motherboard when clicking it back in the housing.
If the screen isen't up a bit on the right lower side when its in place test with a small piece of tape on each side of that part on the flex or directly at the speaker/motherboard.
I have had the same problem once and then it hit the speaker a bit. so released the plate and moved the flax cables a bit higher
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