How to Restore iPhone 4s to Factory Settings - Hard Reset - YouTube
Can't activate iPhone 4s. I just factory reset it through the settings app and it won't activate now. It's running iOS 8.4.1 and I DON'T want to update it to iOS 9.3.6.
How to Hard reset iPhone 4S through recovery mode - YouTube
Micro Center - How to reset the Apple iPhone 4S to Factory Settings
Apple iPhone 4s - 16GB - Black Smartphone (AT&T) GUC | eBay
HOW to Hard Reset iPhone 4/4S [Works in 2021] - YouTube
How to Hard reset iPhone 4S through recovery mode - YouTube
Wiping Your iPhone Completely - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]
How to Do a hard reset and reboot an Apple iPhone 4 « Smartphones :: Gadget Hacks
How to factory reset your iPhone - Swappa Blog
If you forgot your iPhone passcode - Apple Support
Apple iPhones 4S & 5S Smartphones Factory reset AT&T | eBay