My older iPhone was already updated to 9.0.1 and I backed it up to iTunes, encrypted, after unpairing my Apple Watch and making sure that backed up to my phone. I then did a restore from iTunes. What is not included in a restore? As far as I know it would be: Touch ID All Apple Pay Credit Cards Paired Bluetooth devices Some apps will need to have passwords re-entered Anything else not come over in a restore from iTunes. Thanks.