10 minutes, and the battery life is back to like it was new
20 - 30 Minuten
The battery was getting weaker and weaker, while the iPhone was functioning just fine.
The repair went fine ... Followed the guide step by step and the repair went fine. There was really nothing to report.
Definitely buy the spudger ... It helps with the tiny connectors for the antennas. Be patient and follow the tear-down guide.