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Explained guide By Keith Parsons, CWNE #3 · first shared 2026-10-01

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A plain-English guide

Find My,
Explained

How Apple finds your people, your phone and your things, including the AirTag in your suitcase, and what you should turn on before your next trip.
People Devices Items
Keith Parsons · CWNE #3
Current for iOS 27 and watchOS 27 · September 2026
WLAN Pros
Start here

The short answer

You, your phone, an AirTag in your purse, the AirTag tied to your keys. Find My keeps track of all of them. It's one app that finds three kinds of things, and it works on your iPhone, iPad, Mac and Apple Watch.

People

Friends and family who choose to share where they are. Nobody is shared without saying yes.

Devices

Your Apple gear. It can be found even with no signal, and a newer iPhone even when it's switched off for a while.

Items

AirTags and similar tags. Made for things, not people or pets. They have no GPS. Other people's iPhones find them for you.

The one idea behind all of itAn AirTag can't tell anyone where it is. It only sends out a little Bluetooth chirp that says "I'm here." An iPhone that passes by hears it and reports its own location. That report is sealed so only you can read it.

What's inside

How a stranger's phone finds your bag3
Why it stays private4
Where the dot comes from4
Three radios, three jobs5
The app, and sharing with people6
Your phone, even when it dies7
Lost luggage8
A tracker that isn't yours9
Five things people get wrong10
Step-by-step settings11
Where these facts come from15
Find My, Explained2
How it works

How a stranger's phone finds your bag

Your suitcase is on a baggage cart. An AirTag is inside. Nobody has to do anything for what happens next.

1 Your AirTag sends a short Bluetooth "I'm here" 2 A stranger's iPhone walks past and hears it 3 Seals its own location in an envelope only your devices can open 4 Your iPhone opens it and puts a dot on your map Apple's servers pass the sealed envelope along Apple can't open it, and doesn't know who found what The stranger is never told It happens in the background, anonymously
Figure 1. The Find My network. The tag chirps. A passing iPhone hears it and sends its own location, sealed. Only your devices can open it.

Someone else's iPhone, a stranger's, walks by, drives by, or just happens to be in the neighborhood. It hears your tag's chirp, works out where it is itself, and sends that spot to Apple inside a sealed envelope. Your phone opens the envelope and shows a dot on the map.

It sounds a little scary that a stranger is involved. It isn't. It all happens in the background, anonymously. The stranger never knows, and even Apple can't open the envelope. Only you can.

Find My, Explained3
How it works

Why it stays private

The tag's ID changes about every 15 minutes 9:009:159:309:45 7F3A… C019… 5B8E… E24D… An eavesdropper sees four unrelated codes. Only your devices know they are the same tag.
Figure 2. The tag keeps changing its name. Its radio ID changes about every 15 minutes, so nobody can follow it by listening.
  1. The key stays with you. Only your own devices can open the reports.
  2. The finder stays anonymous. Apple doesn't know who found the tag, or whose it is.
  3. The tag keeps no history. It doesn't store where it has been.

Where the dot comes from

GPS satellitesstrong outdoors Wi-Fi access pointsdoes the work indoors Cell towersa rough fix anywhere Stranger's iPhone knows where it is your AirTag, nearby Bluetooth its location, sealed The dot you see = where that phone was
Figure 3. Your dot is the finder's location. The tag has no GPS and no Wi-Fi. The phone that heard it knows where it is, and that becomes your dot.

So the dot moves only when someone walks by. At a soccer game or in a busy airport, phones are everywhere and the dot updates often. In the same plaza at three in the morning, it may not move for hours.

Find My, Explained4
How it works

Three radios, three jobs

Far away, you see a dot on a map. In the same room, you play a sound. Up close, some iPhones show an arrow.

tap Anywhere, eventually: the Find My networkOther people's Apple devices report it, if they pass by. Nearby: BluetoothYour own iPhone connects and can play a sound. Close by: Ultra Wideband (Precision Finding)An arrow and distance on screen. AirTag 2: about 1.5x farther. Touching: NFCA phone with NFC that taps a lost tag can seethe owner's contact info, if they turned it on.
Figure 4. Three radios, three jobs. The farther away the tag is, the rougher the answer. Not to scale.

The arrow is called Precision Finding. It's what tells you your keys are on the couch, two meters away. It needs a special radio called Ultra Wideband in both the phone and the tag. Some iPhone models leave it out. They can still see the map and play a sound.

A word on the wordsBluetooth is the short-range radio your earbuds use. Ultra Wideband is a newer short-range radio that can tell distance and direction. It powers the arrow. NFC works only when you're close enough to touch, the same radio you use to tap to pay.

The arrow isn't available in every country. There, you still get the map and the sound.

From my own travelsOn a trip to Italy, my family spread out in the busy plaza outside the Pantheon, and we got separated from my wife in the crowd. She shares her location with me, and both our iPhones support the arrow. I opened Find My and tapped her name. After a few seconds I got an arrow on my screen and how many feet away she was. We walked that direction and walked right into her.
Find My, Explained5
Using it

The app, and sharing with people

PeopleDevicesItemsMe PeopleFriends and family sharing with you.Get directions, notifications, Find. DevicesYour iPhone, iPad, Mac, Watch, AirPods.Play sound, Lost Mode, erase. ItemsAirTags and other network tags.Up to 32 items in all. MeTurn Share My Location on or off. Items ▾ Apple Watch, watchOS 27 One Find My app. The button at top left switches Devices, People, Items.
Figure 5. The four parts of the app: People, Devices, Items and Me. A simple drawing, not a screenshot.

Sharing your location is always your choice. You pick who sees it, when, and for how long, person by person and tag by tag, and you can stop any time. When my family travels together, we share our luggage tags, so any of us can see where the bags are.

YouPause for one personFrom their card in PeopleYouHomeLate?Check InTells a friend you got thereShare a tagFamily can find it
Figure 6. Three ways to stay in charge of sharing. Pause hides you from one person, Check In tells a friend when you arrive, and shares where you are only if you don't, and one tag can be shared with the family.
Find My, Explained6
Your phone

Your phone, even when it dies

Left your phone somewhere and think the battery is dead? A newer iPhone keeps a little power in reserve, so it can still be found for a while. So can one that's switched off.

On, with signalReports itself directly,GPS, Wi-Fi and cell. Battery deadPower reserve: findablefor up to 5 hours. Switched offFindable for up to 24 hoursthrough the Find My network.
Figure 7. Still findable. With a signal, your phone reports itself. With a dead battery or switched off, it can still be found for a while through the Find My network.

Turn on Send Last Location. When the battery is almost gone, your phone sends its spot to Apple first. Step 1 at the back shows where.

Stop
If a device is lost or stolenMark it as lost in Find My, from another device or at icloud.com/find. That locks it. Erasing it is the last step. Apple will never contact you to say your device was found. Never share your passcode or any code with someone who says they have it.
It used to be harderYears ago I lost an iPad on a flight. Find My showed it right behind the airline's counter, and they still wouldn't let me back there to get it. Today, if there's an AirTag in your bag, many airlines let you share its location right from their lost-baggage page.
Find My, Explained7
Travel

Lost luggage

You can send an airline a live link to your bag's location. Many airlines now accept it.

Bag didn't arriveCheck the map first File the airline'sbaggage report Share Item LocationItems › your tag › pastethe link in their form Airline staff seewhere it is The link stops by itselfwhen you're reunited, after 7 days,or when you end it Separate switch: Show Contact Info Sharing the link does NOT mark the tag as lost. Also turn on Show Contact Info (once called Lost Mode) with a phone number and message. Anyone who taps the tag with an NFC phone sees them. Keep a device onlineUpdates need one of your devices online.
Figure 8. If your bag doesn't arrive. Check the map, file the airline's report, then share the link. Showing your contact info is a separate switch.

Before you fly

DoTag inside the bagAlertLeft-behind alert:OffDon'tTag on the outsideAlertAlerts your phoneat every bag drop
Figure 9. Before you fly. Hide the tag inside the bag, where a thief won't see it, and turn off its left-behind alert (Notify When Left Behind). Left: do this. Right: not this.
  • Check the battery: in Find My, look for a Low Battery note under the tag's name. They're cheap coin batteries. Buy a multi-pack, and keep spares away from children.
  • Name each tag clearly, like "Blue suitcase".
Find My, Explained8
Safety

A tracker that isn't yours

If someone else's tag travels with you, your phone can warn you, as long as Bluetooth and Location Services are on and Airplane Mode is off. iPhones do this, and so do most Android phones.

"AirTag Found Moving With You" on iPhone, or an unknown tracker alert on Android Find it Tap the alert, then Play Sound, or Find Nearby if offered Identify it Hold your phone's top to the white side. Screenshot the page. Feel unsafe? Go somewhere public and contact police first Otherwise, disable it Follow "Instructions to Disable": take the battery out
Figure 10. What to do if you get an alert. Find it, identify it, and if you feel unsafe, go somewhere public and call the police first.
Stop
Why "police first" mattersWhen you pull the battery, the owner stops getting updates and may notice. If you think someone is following you on purpose, keep the tag, go somewhere public, and get help before you disable it. That's our advice, not an Apple rule.
iPhoneWarns you by itselfNo scan buttonScanAndroidWarns you by itselfCan also scan now
Figure 11. Both phones warn you. Only Android can also scan. An iPhone warns you on its own, but has no button to search the room on demand.
Find My, Explained9
Straight facts

Five things people get wrong

Each myth is followed by what's true.

MythAn AirTag is a GPS tracker.
FactIt has no GPS, no Wi-Fi and no cell radio. Its location comes from iPhones that pass by.
MythApple can see where my AirTag is.
FactThe reports are locked with a key only your devices hold.
MythThe map updates every few seconds.
FactIt updates when an iPhone passes by. That can be often in an airport and never in a field.
MythMy iPhone can scan the room for hidden trackers.
FactIt warns you on its own, but has no scan button. Android phones do.
MythEvery iPhone can point an arrow at my AirTag.
FactThe arrow needs Ultra Wideband. iPhones without it can still see the map and play a sound.
Find My, Explained10
Appendix

Step-by-step settings

The › symbol means "then tap". Button names can change a little between updates.

Get your devices ready

1. Turn on Find My for your iPhone

Do this first. Without it, nothing else in this guide works for your phone.
  1. Open Settings › [your name] › Find My.
  2. Tap Find My iPhone and turn it on.
  3. Turn on Find My network, so the phone can be found while it's offline or switched off.
  4. Turn on Send Last Location.
  5. Check Settings › Privacy & Security › Location Services is on.

2. Set up an AirTag

Turn on Bluetooth first. An AirTag 2 needs iOS 26.2.1 or later.
  1. Pull the plastic tab out of the AirTag. It chimes.
  2. Hold it next to your unlocked iPhone and tap Connect.
  3. Pick a name, or Custom Name and an emoji, then Continue.
  4. Agree to link it to your Apple Account, then Done.

If the prompt doesn't appear: Find My › + › AirTag.

3. Change an AirTag's name or emoji

  1. Find My › Items › tap the tag.
  2. Scroll down to Settings and tap Change Name and Emoji, choose Custom Name, type the name and pick an emoji.
Find My, Explained11
Appendix, continued

4. Share an AirTag with up to five people

Handy for family keys or a shared car.
  1. Find My › Items › tap the tag.
  2. Under Share AirTag, tap Add Person, choose the person and their Apple Account, and send.
  3. To stop: tap the person's name › Remove.

Travel and lost items

5. Get an alert if you leave something behind

Leave this off for the tag in your checked bag.
  1. Find My › Items › tap the tag (or Devices › a device).
  2. Under Notify Me, tap When Left Behind and turn it on.
  3. Add places where it's fine to leave it, like home: pick a suggestion or tap New Location, then Done.

6. Share a lost item's location with an airline

  1. File the airline's lost-baggage report first.
  2. Find My › Items › tap the tag. Under Lost AirTag, tap Share Item Location.
  3. If your iPhone says Item Is With You, the bag is too close. This only works once the bag is away from you.
  4. Paste the link into the airline's form, or send it to the agent.
  5. You can see who opened the link, and stop sharing from the same screen.
  6. Keep at least one of your Apple devices online, or the link stops updating.
  7. The people you send it to can see the tag's serial number and your Apple Account email or phone number.
Find My, Explained12
Appendix, continued

7. Mark an AirTag as lost (Show Contact Info)

  1. Find My › Items › tap the tag.
  2. Under Lost AirTag, tap Show Contact Info.
  3. Follow the prompts to enter a phone number and a short message.
  4. Turn it off in the same place once you have the item back.

8. Use the on-screen arrow (Precision Finding)

Needs a newer iPhone. Some iPhone models don't have it.
  1. Find My › Items › tap the tag › Find.
  2. Move slowly and follow the arrow and distance. Tap the speaker button if you're close.
  3. A newer Apple Watch can do this too, from the Find My app.

People

9. Share your location with someone

  1. Find My › Me › turn on Share My Location.
  2. People › + › Share My Location › choose the person.
  3. Choose how long: For One Hour, For Today, Always, or Custom (anywhere from 15 minutes to 30 days).
  4. For a family group: Settings › Family › Location Sharing.
Find My, Explained13
Appendix, continued

10. Use Check In when you head home

  1. In Messages, open the conversation with the person › + › Check In.
  2. Tap Edit and choose When I arrive (pick the destination) or After a timer.
  3. Tap Send. It ends by itself when you arrive.

11. Pause your location for one person (iOS 27)

  1. Find My › People › tap the person's name.
  2. Under My Location, tap Hide Location. To stop sharing with them for good, scroll down to Stop Sharing My Location.

Safety and upkeep

12. If you get "AirTag Found Moving With You"

  1. Tap the alert › Continue.
  2. Tap Play Sound, or Find Nearby if your iPhone offers it.
  3. Hold the top of your iPhone to the white side of the tag and screenshot what appears.
  4. If you feel unsafe, go somewhere public and contact police. Otherwise tap Instructions to Disable and remove the battery.

13. Change an AirTag's battery

Keep new and used coin batteries away from children. A swallowed one can cause serious injury or death within hours.
  1. Press the steel cover and turn it counterclockwise until it stops, then lift it off.
  2. Put in a new coin battery (CR2032), + side up. Look for packs marked "Compatible with Apple AirTag".
  3. Line up the three tabs, press and turn clockwise until it stops.
Find My, Explained14
Sources

Where these facts come from

Checked against Apple's pages in September 2026.

  • Apple Platform Security Guide, Find My: support.apple.com/guide/security/sec6cbc80fd0
  • Apple 102648, Find My network and Send Last Location
  • Apple 102515, Location Services and privacy (GPS, Wi-Fi and cellular positioning)
  • Apple 126203, AirTag (2nd generation) technical specifications; Apple 111847, AirTag (1st generation)
  • Apple 109512, Precision Finding and Ultra Wideband availability by device and country
  • Apple 120373, Find My on Apple Watch (watchOS 27)
  • Apple 105104, share your location; Apple 105107, Family Sharing location
  • Apple 104978, if your device or item is lost
  • Apple 102414, Notify When Left Behind
  • Apple 119874, unwanted tracking alerts
  • Apple 101602, set up AirTag (32-item limit, iOS 26.2.1 for AirTag 2)
  • Apple 102600, replace the AirTag battery
  • Apple Newsroom, 2024-05-13: cross-platform unwanted tracking alerts
  • Apple Newsroom, 2024-11-13: Share Item Location
  • Apple Newsroom, 2026-01-26: AirTag (2nd generation)
  • apple.com/airtag and apple.com/icloud/find-my (network size, "over a billion" devices)
  • Apple Personal Safety User Guide: Check In, Find My and location sharing
  • Google Android Help 13658562: unknown tracker alerts and Scan now
About this guideWritten for people who aren't technical and want to know what Find My does before they need it. Apple, AirTag, iPhone, Apple Watch and Find My are trademarks of Apple Inc. This guide is independent and isn't affiliated with or endorsed by Apple.
Find My, Explained · Keith Parsons · CWNE #315