AirTag is Apple's coin-sized Bluetooth tracker, located by roughly 2 billion Apple devices on the Find My network — no SIM, no subscription. This is the map to everything we've published: how it works, setup, accuracy, battery, travel rules, anti-stalking safety, and when to pick something else.
An AirTag is an 11-gram disc with Bluetooth, a U1/U2 Ultra-Wideband chip, a speaker, and a replaceable CR2032 battery — but no GPS, Wi-Fi, or cellular. It borrows location from the ~2 billion Apple devices on the Find My network. Pick AirTag for keys, bags, wallets, and luggage in iPhone-dense places. It is NOT a live tracker for a moving car or a dog on open land, and it cannot pair to an Android phone — for those, use a cellular GPS tracker or a Find Hub tag.
An AirTag is an 11-gram disc with Bluetooth, a U1/U2 Ultra-Wideband chip, a speaker, and a replaceable CR2032 battery — but no GPS, Wi-Fi, or cellular. It borrows location from the ~2 billion Apple devices on the Find My network.
That scale means a $29 tag with no radio of its own can be found almost anywhere an iPhone walks past, with end-to-end encryption and no monthly fee — provided someone's iPhone passes near it.
Pick AirTag for keys, bags, wallets, and luggage in iPhone-dense places. It is NOT a live tracker for a moving car or a dog on open land, and it cannot pair to an Android phone — for those, use a cellular GPS tracker or a Find Hub tag.
AirTag has no GPS — when it leaves your own iPhone's Bluetooth range, passing Apple devices anonymously relay an encrypted location back to you. Two generations share one shell and price; the 2026 AirTag 2 adds a U2 chip and a louder speaker.
Pairing takes under a minute next to an unlocked iPhone. Handing a tag on, or recovering a second-hand one, means resetting it and transferring ownership first.
Precision Finding walks you to a tag with an on-screen arrow on UWB iPhones. Lost Mode flags a tag so a finder sees your contact note; location history is deliberately limited by Apple's privacy model.
A CR2032 coin cell lasts roughly a year and is user-replaceable in seconds. The tag is IP67 water-resistant; the speaker is how you find it nearby when UWB isn't available.
AirTags are allowed in checked luggage — their CR2032 falls under the airline rules for small button cells — and have helped travelers track delayed bags. Some airlines now read AirTag location directly.
Apple and Google built a cross-platform standard so unknown tags alert nearby phones. If you carry Android you can detect an AirTag but not use one — and if AirTag isn't the right fit, we say so plainly and point to what is.
Every deep dive in this cluster — 151 articles, the curated path first.
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