5 - 30 Minuten
Battery not holding charge as long.
Quick and easy over all. I could not really make out the tip of the 5-pointed star screwdriver (even with a magnifier!). I had to fit it by feel and had to push firmly to get it to engage. Once I pushed firmly the screw came out easily with a couple of turns.
The battery was tightly glued in. I just pulled the plastic tab with steady pressure and it came out eventually.
When reinstalling battery, connect battery connector before installing battery. This way you can be sure to fold the ribbon cable neatly away as opposed to trying to cram the extra ribbon cable into the gap between the battery and the logic board.
GENTLY blow out the inside of the phone with canned air especially the camera lens and the back of the back.