AirTags are added and managed in the Find My app under the "Items" tab that Apple introduced in iOS 14.3. Like other Apple devices, each AirTag is displayed on a map in the Find My app so you can see its location. AirTags connect to your iOS and macOS devices over Bluetooth.
Apple added a U1 chip in each AirTag so you can see its precise location indoors or out if it's nearby, or its last known location if it is not. There are built-in speakers to play a sound to find a lost AirTag in the house, and you can either play a sound through the Find My app or ask Siri to find an AirTag with a sound.
If an AirTag is lost or stolen, the Find My network can help you find it. The Find My Network takes advantage of hundreds of millions of iPhone, iPad, and Mac devices to help you locate an AirTag, with the AirTag showing up on a map when it is located by someone else's device.
In Lost Mode, an AirTag will automatically send out a notification when it's detected by someone in the Find My network, and you can add your contact info so someone who finds your item can get in touch with you.
Apple is able to regularly update the AirTags firmware and has done so several times since the AirTags launched.
iPhones with a U1 chip, which includes the iPhone 11 and the iPhone 12 models, can take advantage of Precision Finding, a feature that lets you see specific instructions on how to get to your lost AirTag. Precision finding combines AR, sound, and haptic feedback to help you out