Instructions good, not great

Meu Problema

iPhone 4 had limited battery life

Minha Solução

Battery replacement took about 20 minutes and was successful.

Meu Conselho

• 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.