Hi brothers and sisters !
I am using iPhone 4s and intend to upgrade iOS 9.3 to it, but I am confused because I do not know if the update will be able to use new features such as Night Shift, fingerprint security, notes.
Hi there !
As you know, iOS 9.3 is the latest iOS operating system today, it adds a lot of new features for users, most users of iOS 9.2.1 already
For iPhone 4s and also iPhone 5 we recommend not
https://Software/iphone-4s-co-nen-nang-cap-ios-9-3-4165n.aspx