Because you are restoring your entire iPhone from a backup, however, the notes that will appear on your iPhone are the notes that were on your iPhone on the day of the backup. Thankfully, you can restore your media from a preexisting backup. If you regularly back up your data with iTunes, then your notes and other data should be backed up to your computer.
Using iTunes to restore notes from a backup Once you select or add an account, make sure Notes is turned on.Select the account, or if you only have iCloud set up, take the time to add your other email accounts.