New answers tagged geolocation
When you get to the view where you can see the map and have selected When I Leave you can pinch and zoom to set the radius of where the notification will be triggered.
The generic answer you can find at Apple support website About location precision or accuracy Depending on your device and available services, Location Services uses a combination of cellular, Wi-Fi, Bluetooth, and GPS to determine your location. If you're not within a clear line of sight to GPS satellites, your device can determine your location ...
It's the same accuracy as the GPS accuracy of the device. If the GPS on the iPhone can't obtain a good signal, it may use Wi-Fi triangulation which will reduce the accuracy. GPS accuracy may be decreased depending on the phone's environment (i.e. a tunnel would not have great GPS, but standing in an open field would).
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