Can I use an AirTag with an Android phone?
Not to own and track one. Setup requires an iPhone or iPad, and Apple states this directly, but the dependency runs deeper: tracking happens in the Find My app, which exists only on Apple platforms, and there is no Android app that lets you own an AirTag. If your household runs on Android, or if you are buying these as a gift for someone who does, this is the wrong product and no workaround changes that. An Android phone can still tap a found AirTag over NFC to read the owner's contact message.
How do I attach it to my keys?
You buy a holder, because there is not one in the box. An AirTag is a smooth disc with no hole, no loop and no clip, so there is no way to attach it to anything as supplied. Keys need a key ring holder, a bag needs a loop, a bicycle needs a mount, a pet collar needs a collar holder. Apple sells its own and there is a large third-party market for less, but budget for four of them alongside a four-pack or you will have four tags and nothing to attach them to.
Is the CR2032 battery a danger to small children?
Yes, and it needs stating plainly, because AirTags end up exactly where small children reach: on keys, in bags, on pushchairs, on toys. A swallowed button battery is a medical emergency rather than a wait-and-see situation, since it can generate a current that causes severe internal burns, and it can be fatal. Apple's design helps by requiring a deliberate press-and-twist a young child cannot easily perform, and some replacement cells carry a bitterant coating. Keep loose cells locked away, check the back is twisted fully home after a change, and if you ever suspect a child has swallowed one, go to an emergency department immediately rather than waiting for symptoms.
Will it work if I lose something in the countryside?
Less well, and the reason is the network rather than the tag. In a city, a train station, an airport or a shopping centre, Apple devices are dense and a lost item updates its position quickly, which is where AirTag is at its strongest. In a remote area, or even a quiet residential street, updates can be much slower or absent entirely, because there is nobody passing to report it.
What is Precision Finding and does my iPhone have it?
It is the close-range half of the system, and it uses Ultra Wideband radio to give you a distance and a direction arrow that walks you right up to the tag, turning a vague sense of the right room into the exact cushion it is under. Apple is careful to say this works on select iPhone models, and that is a real limitation: older phones without the Ultra Wideband chip fall back to playing a sound on the tag's built-in speaker, which works but is slower.
Could someone use one of these to track me?
Apple has built in protections and they are worth knowing about. An AirTag separated from its owner and travelling with someone else will alert that person's iPhone, and will eventually play a sound by itself. Android users are not left out either: Apple publishes a Tracker Detect app, and modern Android versions include unwanted-tracker alerts of their own. If you receive such an alert, take it seriously and follow the on-screen instructions to identify and disable the tag.
