I would recommend everyone to connect their new device to iTunes or Finder to restore the new device which will install the latest firmware or just quickly setup the device as new, do not sign into iCloud, OTA update the device then erase all content and settings. After all that, then set up the device as you wouldYep, so if you updated your current phone to iOS 16 your backup won't work on the new phone out of the box, since the 14's have a down-rev version of iOS 16. You'd have to setup the 14 without a backup, restore, then load your backup. But if your current phone is on 15.x or earlier, you won't have this issue.