15 - 30 minuten
Fiancee managed to get hot fudge on her phone and specifically on and in the power button. The button began sticking pretty bad and would randomly lock the phone on here due to it constantly sticking.
The repair started off horribly. The recommended PH bit would not remove the screws starting with the battery and I was about to just give up until I tried a flat head bit. Luckily that worked and I was able to get going. The guide I followed was pretty precise, my only complaint is that i'm pretty certain a few steps were incorrect, mainly, when removing the logic board I think it forgot to mention a third screw holding it down in the upper right corner. Could have easily been user error but it was a success regardless.
My only advice would be to put estimated repair times on these guides. This was my first repair and it took around 2 hours given all the problems I ran into. Would have been nice to know what to expect as a time commitment, even a ballpark guess would have been nice.
Mako Driver Kit - 64 Precision Bits
iPhone 4 and 4S Power and Lock Button