So, I installed iOS 9 Beta 1 on my Old, Rusty iPhone 4s...
iPhone 4S users rejoice: Apple iOS 9 to be optimized for older devices | Extremetech
iPhone 4s (iOS 9.3.5) - Apple Community
Apple Releases iOS 9.3.6 and iOS 10.3.4 for Older Devices to Maintain Accurate GPS Location and Date - 3uTools
iPhone 4S From iOS 9.3.5 to iOS 9.3.6 (Installation and Geekbench) - YouTube
fluff] 64gb iPhone 4s updated from slow iOS version (7 I think) to faster one given by friend : r/LegacyJailbreak
iOS 9 sarà disponibile anche sui vecchi iPhone | Wired Italia
Original Unlocked Apple iPhone 4S -8/16/32/64GB White iOS 9 3G WIFI Smartphone | eBay
discussion] hello. i downgraded my iphone 4s to ios 9 to ios 6. works youtube, facebook. but the messenger doesn't work, it's hard to fix. I also installed other tweaks, but the
Is the latest iOS 9 known to be a slightly harsh operating system for the older model iPhone 4s and should it be updated? - GIGAZINE