15 - 30 분
I had a broken power button. It means, I could'nt press it anymore. No effect at all. No black out or switch off function.
I went step by step throught the nice and very well described repair guide from ifixit.com
Thanks guis for this very very nice manual!!!
What I additionali did, was th following. I took a blank sheet A4 paper and drew some filelds named with the step number on it. During dimanteling I placed the removed parts and screws in the specified field. So it was easy to mout back the parts at the correct place.
iPhone 4 Replacement Battery
iPhone 4 and 4S Power and Lock Button
iPhone 4 (GSM/AT&T) Power and Sensor Cable
iPhone 4 (GSM/AT&T) Headphone Jack & Volume Control Cable