My shitty search skills have not found a solution. How do you transfer old text messages to a new phone without iTunes? My 4s wasn't upgrade to the new iOS if that makes a difference.
It can be any PC or Mac just as long as it has iTunes. Just connect your old 4s and do a backup. If you choose to encrypt the backup it will include your passwords. Once the backup is complete, connect the new phone and use the newly created backup to restore the phone.