HOW TO Get started on Apple Watch
Use the side button
On Apple Watch, activate Emergency SOS by pressing and holding the side button. Swipe across the last option to use Emergency SOS. If you don’t have a cellular Apple Watch, your iPhone must be nearby.
Fall Detection
Fall Detection works on Apple Watch Series 4 or later and requires Wrist Detection. If you fall, it will sound an alarm and start Emergency SOS. If it detects that you haven’t moved for a minute, it will call for you.
End a call
If you accidentally start a call, you can end it by tapping the red End Call button, then Yes. You can choose whether to still send a message to your emergency contacts regardless of whether the call goes through.