IPad 2 and iPhone 5 s using iOS 8.3 and iPhone5s would like to update

I have an ipad2 with version 8.3, which I intend now, so I do not lose the ability to play my old games. I also have an iPhone 5 s with the same version (8.3)

. My question is, if I update my iPhone 5 s for the last iOS 9.3.1 (keeping ipad2 on 8.3) yet they will be compatible with others? Which means that I will receive my messages, pictures, contacts, etc. on both.

A question that I think is Notes. If you upgrade to iOS 9 and you select Upgrade now to use the new features of Notes after the opening of the Notes, the Notes will be are no longer synchronized to older versions. See upgrading of your notes with iOS 9 and OS X El Capitan - Apple Support

Tags: iPhone

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