iOS 8 for iPhone 4: Can You Upgrade? If Not, Which is the Latest Version?
Apple will compensate those that used an iPhone 4S with iOS 9
Download iOS 9.3.4 IPSW For iPhone And iPad [Direct Links] | Redmond Pie
iOS 5 through iOS 9 speed test on iPhone 4s confirms iOS gets slower every year on older devices
Gadget Daddy: Is the end really near for 7-year-old iPhone 4S lawsuit?
iPhone 4s: iOS 9 installieren - so geht's - CHIP
Apple Reaches Settlement to Pay $15 to Some iPhone 4S Owners Who Experienced Buggy Performance After iOS 9 Update - MacRumors
iOS 9.3.2 Beta 4 Gives the iPhone 4s a Substantial Speed Boost
Apple iOS 9 Class Action Lawsuit
iOS 7 on iPhone 4 tested, camera is much faster to open - CNET
How to get iOS 9 for iPhone 4 (Older Devices) - YouTube
Update iPhone 4 to iOS 8 or 9 - Is this Possible?
Original Apple iPhone 4s -8/16/32/64GB Black White iOS 9 3G WIFI Smartphone | eBay
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
How to Downgrade iPhone 4s from iOS 9 to iOS 6.1.3 (Without SHSH Blobs) – iPodHacks142
IOS 9 on the iPhone 4S (Should you download?) - YouTube