![IOS 9 is also optimized for older devices including iPhone 4s, possibility to become jailbreak impossible - GIGAZINE IOS 9 is also optimized for older devices including iPhone 4s, possibility to become jailbreak impossible - GIGAZINE](http://i.gzn.jp/img/2015/05/25/ios9-optimized-for-iphone4s/6300224891_95be7ac1d7_b.jpg)
IOS 9 is also optimized for older devices including iPhone 4s, possibility to become jailbreak impossible - GIGAZINE
![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 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](https://i.redd.it/discussion-hello-i-downgraded-my-iphone-4s-to-ios-9-to-ios-v0-pis6rhegapw81.jpg?width=3024&format=pjpg&auto=webp&s=f52bbd16b56e374894b2feb922914a3c8a9b0a7a)
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
![A few of the phones in my collection, from left to right: iPhone 4, iOS 7.1.2, iPhone 4S, iOS 5.1.1, iPhone 4S, iOS 9.3.5 : r/iphone A few of the phones in my collection, from left to right: iPhone 4, iOS 7.1.2, iPhone 4S, iOS 5.1.1, iPhone 4S, iOS 9.3.5 : r/iphone](https://i.redd.it/eruj34egv4a61.jpg)