It really depends on how you had iCloud set up on your previous iPhone(s) or other iThingies. If you have your iPhone set up to back up your photos as well as system critical data to the cloud, it should be simple to get your original stuff working on the new iDevice. At some point in the initial setup on the new device, you are given the option of authenticating to your Apple ID (you need to be on either a wireless (preferred) or cellular data connection ). If your Apple ID is accepted, you are given the option to restore your previous iCloud data to your new device. If you select yes, it will likely take quite a while - depending on how much stuff is being restored - but things should work quite well once the process completes. This is actually one of the best things about hanging out in the Apple "walled garden". As long as you stick with Apple devices, migration is simple.