I iMore Question Nov 10, 2016 #1 I have iPhone 4s running iOS 8.1.3. I like to upgrade to iOS 9.3 but have seen a lot of problems when upgrading 4s iPhone.
I have iPhone 4s running iOS 8.1.3. I like to upgrade to iOS 9.3 but have seen a lot of problems when upgrading 4s iPhone.
psamo Well-known member Nov 10, 2016 61 0 0 Visit site Nov 10, 2016 #2 The biggest problem is it slows down the phone.But still it can use.