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
iHungary | Így teljesítenek iPhone 4s-en a különféle iOS verziók
iOS 9 on the iPhone 4S: A stay of execution, nothing more | Ars Technica
iPhone 4S users rejoice: Apple iOS 9 to be optimized for older devices | Extremetech
iOS 9.2.1 makes speed boosts for users with Apple's older iPhone 4s and 5 | AppleInsider
How to install iOS 9 on iPhone 4s with iTunes - YouTube
iOS 9 is now available to download for iPhone and iPad | TechRadar
Set up Internet - Apple iPhone 4S - iOS 9 - Device Guides