How to find your AirPods serial number on your iPhone or iPad If you can't read the serial number on the inside of your AirPods case, you can also grab it from the Settings app on your iPhone or iPad. • Connect your AirPods to your iPhone or iPad. (This requires your AirPods have power and a Bluetooth connection; if not, you'll have to try and read the case's serial number instead.) • Open the Settings app on your iPhone or iPad. • Go to General > About.