Changing iPhone 3GS battery

Mein Problem

The battery was completely exhausted and the phone, almost useless (it was like 10 hours long with no use, 2-3 with 3G or GPS use).

Meine Reparatur

It was more difficult than expected, you need to take apart the phone entirely, but after some back and forth everything went well and the phone is useful again!

Mein Rat

This is difficult advice to follow but you generally need to pull & push stronger than it seems :D