Iphone – not wake up from sleep/standby mode – iphone mobile software or hardware issue
Hi,Problem is that when iPhone 4 go to Standby/sleep mode it is impossible to turn it on.
It doesnt happen all the time, and I cannot tell when exactly it happens.
But it happens a lot. and mostly after phone stays in standby for more than seconds..
So you get iPhone Along with black screen.. then it is even difficult to make a hard reset sometimes..
(when phone turned on all modoules function well)
What should cause this problem? What to check in the Logic board?