Find My is accurate enough to locate a lost phone in your home, but not accurate enough to track someone across a city
Find My (Apple's location service for iPhones, iPads, and Macs) uses a combination of GPS, Bluetooth, and crowdsourced location data from other Apple devices. In ideal conditions — outdoors with a clear sky — it can pinpoint a device within 5 to 10 meters. Indoors or in dense urban areas, accuracy drops to 20 to 50 meters or worse. The real limitation is not the technology itself but what you are trying to do with it.
If your phone is in your house, Find My will get you to the right room. If someone's phone is across town, Find My will show you the general neighborhood but not the exact street or building. This matters because it changes what you can actually use the feature for — and what you should not rely on.
Key Takeaways
- Find My works best for devices you own that are nearby and indoors, where it can narrow the search to a single room or building.
- Accuracy degrades significantly outdoors in cities, in tunnels, in basements, and anywhere GPS signals are blocked or bounced off buildings.
- Find My uses Bluetooth range (about 30 meters) to locate offline devices, so a phone powered off or in airplane mode cannot be found.
- The service relies partly on crowdsourced data from other Apple devices, which means accuracy depends on how many Apple users are in your area.
- Find My is not designed for real-time tracking of people and should not be used to monitor someone without their knowledge or consent.
How Find My actually locates your device
Find My works through three separate mechanisms, and which one kicks in depends on whether your device is powered on and connected to the internet. If your iPhone is on and has internet access, Find My uses GPS (outdoors) or Wi-Fi positioning (indoors) to pinpoint it. GPS alone is accurate to about 5 meters in open sky. Inside a building, GPS fails because the signal cannot penetrate walls, so the system switches to Wi-Fi — it triangulates your position based on nearby Wi-Fi networks it recognizes.
If your device is powered off or in airplane mode, Find My switches to a second method: Bluetooth. Any Apple device within about 30 meters can relay its location back to you through Apple's servers. This is why you can sometimes find a dead phone — as long as another Apple device has been near it recently, you get a location ping. The accuracy here is much lower, usually 30 to 100 meters, because Bluetooth range is limited and the relay depends on how recently another device passed by.
The third mechanism is crowdsourced location data. If your device is offline and no nearby Apple device has detected it via Bluetooth, Find My can show you the last known location based on data Apple has collected from other users' devices in that area. This is the least accurate method and the slowest — it may show you where your phone was hours ago, not where it is now.
Where Find My fails: indoors, underground, and in cities
GPS does not work reliably indoors because walls, metal, and concrete block or scatter the signal. In a basement or parking garage, Find My may show your device as being outside the building or several floors away. In a dense city with tall buildings, GPS signals bounce off skyscrapers — a phenomenon called multipath error — and your device may appear to be on a different block entirely.
Wi-Fi positioning is more reliable indoors but only if your device is connected to Wi-Fi networks that Apple's database recognizes. If you are in a building with a private or unfamiliar network, or if you are in a rural area where Wi-Fi networks are sparse, Wi-Fi positioning becomes unreliable. Bluetooth range is also a hard limit: if no other Apple device has been within 30 meters of your phone in the last few hours, Bluetooth cannot help you find it.
Tunnels, subways, and underground parking present a worst-case scenario. GPS does not work. Wi-Fi may not be available. Bluetooth range is limited. In these situations, Find My may show you the last known location from hours earlier, which is useless if you need to find your phone now.
Accuracy varies by location and device density
Find My is more accurate in areas with high Apple device density — cities, suburbs, and college campuses where many people carry iPhones. In these places, the crowdsourced Bluetooth relay network is dense, so an offline device is more likely to be detected by another Apple user passing nearby. In rural areas with few Apple devices, the crowdsourced network is sparse, and Find My may not be able to locate an offline device at all.
The type of device also matters. An iPhone with GPS is more accurate than an iPad without cellular service. An Apple Watch with GPS is more accurate than an AirTag (which relies entirely on Bluetooth relay and crowdsourced data). If you are trying to find an AirTag in a rural area, accuracy may be poor or nonexistent.
Time of day and weather also affect accuracy. GPS is less reliable in heavy rain, snow, or fog. Indoors, accuracy depends on how many Wi-Fi networks are nearby and how well your device can connect to them. A phone in a basement with no Wi-Fi coverage will be harder to locate than a phone on the ground floor of an office building with strong Wi-Fi.
What Find My can and cannot do
Find My is designed to help you locate your own devices. It works well for this purpose: if you lost your phone in your house, Find My will narrow it down to a room or two. If you left your iPad at a coffee shop, Find My will show you the coffee shop's location. If your laptop was stolen, Find My can show you where it is now, and you can use that information to contact police.
Find My is not designed for real-time tracking of people. Even if you share your location with a family member through Find My, the location updates are not instantaneous — they may be delayed by minutes or hours. The accuracy is not precise enough to track someone's movements through a city or to know which building they entered. If you need to monitor a child's location in real time, dedicated family tracking apps (like Life360 or Google Family Link) are more reliable because they update more frequently and are designed specifically for that purpose.
Find My should never be used to track someone without their knowledge or consent. Sharing location through Find My requires the other person to have enabled it and to have accepted your sharing request. If someone disables location sharing or turns off their device, you cannot track them. Attempting to track someone without consent is illegal in most jurisdictions and violates Apple's terms of service.
How to interpret Find My results
When you open Find My and see your device on a map, the circle around it represents the margin of error — not the exact location. A large circle means low accuracy; a small circle means high accuracy. Outdoors in open sky, the circle might be 5 to 10 meters. Indoors or in a city, it might be 50 to 200 meters. Do not assume your device is at the center of the circle; it could be anywhere within it.
If Find My shows your device as stationary for hours, it may be powered off, in airplane mode, or out of range of any network. The location shown is the last known position, not the current position. If Find My shows your device moving, the movement is real — but the path shown may not be precise, especially if the device moved through areas with poor GPS or Wi-Fi coverage.
If Find My cannot locate your device at all, it means the device is powered off, in airplane mode, or has not been detected by any Apple device or network in your area for some time. This does not mean the device is gone; it means Find My cannot help you find it right now. In this case, contact your carrier or local police if you believe the device was stolen.
Privacy and security trade-offs with Find My
Find My location data is encrypted end-to-end, which means Apple cannot see where your devices are. However, the Bluetooth relay network that locates offline devices does involve crowdsourced data from other Apple users. Your device's location is not shared with those users — only Apple's servers know the mapping — but the system does rely on other people's devices detecting yours.
If you are concerned about being tracked, you can disable Find My entirely in Settings. You can also disable location sharing with specific people while keeping Find My on for your own devices. If you turn off location services completely, Find My will not work, but neither will maps, weather, or other location-dependent apps.
The trade-off is straightforward: Find My is useful only if your devices are discoverable. If you disable it to maximize privacy, you lose the ability to locate a lost or stolen device. Most people accept this trade-off by keeping Find My on for their own devices but being selective about who they share their location with.
Frequently Asked Questions
Can Find My locate my phone if it is turned off?
Yes, but only if another Apple device has been within 30 meters of it recently. Find My uses Bluetooth relay to detect offline devices. If no Apple device has passed near your phone in the last few hours, Find My cannot locate it. The accuracy is also much lower — usually 30 to 100 meters instead of 5 to 10 meters.
Why does Find My show my phone in a different location than where I left it?
This usually means your phone moved after you lost track of it, or the location shown is the last known position from before it lost internet connection. If your phone is indoors or in a city, the accuracy circle is large, and your phone could be anywhere within it. If the location seems very wrong, your phone may be in airplane mode or powered off.
Is Find My accurate enough to track someone in real time?
No. Find My updates are delayed by minutes or hours, and accuracy is not precise enough for real-time tracking. The location shown is often accurate only to within 20 to 50 meters indoors or in cities. For real-time tracking of family members, use dedicated family tracking apps designed for that purpose.
Can someone track me with Find My without my permission?
No. Find My requires you to explicitly accept a sharing request from another person. You can see who has access to your location in Settings and revoke access at any time. If someone is tracking you without consent, they are using a different method, not Find My.
Does Find My work if my phone is in airplane mode?
Find My can still locate your phone via Bluetooth relay if another Apple device is nearby, but accuracy is much lower and the location may be hours old. Find My cannot use GPS or Wi-Fi positioning if airplane mode is on. If you need to find your phone quickly, turn airplane mode off if possible.