How accurate is the app?
how accurate is the location on
find my?
iPhone 11, iOS 15
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Depends. It just taps into location services. Location services uses a combination of GPS, Bluetooth, cellular, Wi-Fi triangulation, and internal gyroscopes. GPS is obviously the most accurate, but it also uses Wi-Fi where Apple has a database of Wi-Fi locations. It should be able to figure out where one is within maybe 50 feet.
This describes how it figures out where an iPhone is located.
Turn Location Services and GPS on or off on your iPhone, iPad, or iPod touch - Apple Support