You can register an AirTag to your Add or update a third-party item.
Note: Location sharing and finding items aren’t available in all countries or regions.
on your iPhone.
Tap Items at the bottom of the screen, then tap the AirTag whose name or emoji you want to change.
Tap Rename Item.
Choose a name from the list or choose Custom Name to type a name and select an emoji.
Tap Done.
When you register an AirTag to your Apple Account, you can view more details about it in the Find My app.
Go to the Find My app Apple Support article: What to do if you get an alert that an AirTag, Find My network accessory, or set of AirPods is with you