How to determine why iPhone 4 doesn't turn on or charge?
I'm trying to help a friend with an iPhone that's apparently dead.
The device does not turn on or charge, nor does it respond to the power button or power+home buttons combination.
So far I've tried:
- Leaving it charging for a few hours;
- Cleaned the battery and cellular connectors with isopropyl alcohol.
- Using this answer (Will not power on, what could it be?) tried to connect it to a Mac with only the base and battery connectors hooked up with the logic board. iTunes did not recognize it and nothing appears on the Mac's info report (USB connections).
Edit: the only times the computer shows anything related with the iPhone connection is a very very rare "USB device is drawing too much power ..." warning message popping. Other than that there is no info.
Edit2: the battery does gets warmer after some time when connected to the power charger
I'd be very thankful for any suggestions.