my iPhone 3GS Battery started expanding and it popped the screen off : r/techsupportgore
The price of replacing your iPhone battery has gone up | ZDNET
Replacement Battery For iPhone 3GS used to Replace battery for iPhone3gs battery for iphone 3g battery with open tool - AliExpress Cellphones & Telecommunications
Here's how to check if your iPhone needs a new battery
Replacement Battery For iPhone 3GS used to Replace battery for iPhone3gs battery for iphone 3g battery with open tool - AliExpress Cellphones & Telecommunications