5 - 30 minutos
iPhone 4 had limited battery life
Battery replacement took about 20 minutes and was successful.
- Repair instructions refer to pieces (contact clip, pressure contact) not labeled in photo or diagram. The iPhone 4 Teardown page was somewhat helpful here.
- Reassembling the phone was more difficult than taking it apart, especially getting the screw to hold down the battery connector.
- The video and written instructions stress the need to "clean all metal-to-metal contact points," but they don't show how to do this. Instead, I wore latex gloves during the repair to avoid getting oils onto the parts. That seems to have worked.