How To: Replace the Battery on your iPhone 4s! - YouTube
My iPhone 4S Battery Troubles | iSource
Homemade iPhone 4s battery from a 18650 : r/techsupportmacgyver
How To Change The Battery On iPhone 4S? - YouTube
question] Recently got my hands on an iPhone 4 running iOS 7.1.2. Should I jailbreak it? Btw it's a 32gb white, I also need to replace the battery. : r/LegacyJailbreak