my iPhone 3GS Battery started expanding and it popped the screen off : r/techsupportgore
question] I'm disappointed, I bought this new iPhone 3GS on EBay, never used but the battery does not seem to have enjoyed being so long without being turned on. It restarts in
Official iPhone 3G / 3GS Battery Replacement Video & Instructions - iCracked.com - YouTube
NewerTech® : Batteries : NuPower® Battery Replacement Service for Apple® iPhone® 3GS