Chosen Solution
Hi, 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 (link here) 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. Thanks
Replace battery. See if fixed. If not, replace charging port assembly with attached flex cable, lower mic, home button connector.
Was there any specific event that caused the phone to malfunction? more information may help determine the cause. A quick idea, IOS7 causes a major bug that causes iphones 4/4s to appear completely dead, try plugging the phone in at the mains and holding the power and hoe buttons for up to a minute and see if you get any response. Regards Tiny
acs- First thing I would do would be to purchase both a new battery and new charging dock connector and not to salvage from another phone. Also, as Tiny suggested, use a wall mains to connect it to charge, you could also rule out the USB sync cable and the wall plug by purchasing new, too! If this all fails you would have ruled out any of the easily replaced components being at fault and I would consider the issue being related to the power IC on the main board; this I’m afraid is considerably more difficult to replace (and where my micro soldering skills are lacking) Hope this helps! Will
