With Fall Detection turn on, Apple Watch can help alert emergency services when a hard fall has been detected and notify your emergency contacts. If Apple Watch detects a hard fall and that you have been immobile for about a minute, it taps your wrist, sounds an alarm, and then attempts to call emergency services.
To call emergency services, your Apple Watch or nearby iPhone needs a cellular connection, or needs to have Wi-Fi calling turned on and Wi-Fi coverage available.
If cellular and Wi-Fi coverage are not available, and your iPhone 14, iPhone 14 Pro, or later is near your Apple Watch, Fall Detection uses your iPhone to send the notification using Emergency SOS via satellite, where Emergency SOS via satellite is available. See the Apple Support article wrist detection, Apple Watch won’t automatically attempt to call emergency services even after it has detected a hard impact fall.
Choose “Always on” to have Fall Detection on at all times, or “Only on during workouts” to have Fall Detection on only when you’ve started a workout.
If you’re between age 18 and 55, and setting up a new Apple Watch with watchOS 8.1 or later, Fall Detection only during workouts is turned on automatically. If you upgrade your existing Apple Watch from an earlier version of watchOS, you must manually turn on the “Only on during workouts” feature.
For more information, see the Apple Support article Use Fall Detection with Apple Watch.
Note: Apple Watch cannot detect all falls. The more physically active you are, the more likely you are to trigger Fall Detection due to high-impact activity that can appear to be a fall.