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I just bought a used iPhone 4S with cracked screen, and installed a new lcd with gold frame. Just after putting the phone together it starts overheating. I have not installed any apps since recovery (fresh start). It seems as if the chip and the flash memory gets extremely hot. I almost burned myself touching it! The battery drains quickly from 20% to shutdown in a few minutes.

Does anyone know a solution to this?

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Are location services on, and being used? – demure May 24 '13 at 18:46
Just replacing the screen wouldn't cause this... what was the cause of the broken screen in the first place? – John Jun 18 '13 at 1:49

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