Crash Detection

Crash Detection is a feature of iOS and watchOS developed by Apple to automatically contact an emergency number (such as  in North America,  in Australia, or  or  in other regions) after a severe crash has been detected by a supported device.

History
Crash Detection was introduced in September 2022 with the iPhone 14 series along with the Apple Watch Series 8, Apple Watch Ultra, and 2nd-generation Apple Watch SE. iOS 16, watchOS 9, or later is required. A supported device senses sudden changes in sound levels, cabin pressure, direction, and speed up to 256 s to determine whether a severe crash has occurred and automatically call Emergency SOS if the user does not respond.