A woman in Virginia Beach used the Emergency SOS feature on her iPhone to contact emergency services during an attempted assault.

The feature, which is activated by holding down the side button and volume button on an iPhone, alerted emergency services to what was happening. The would-be assailant was subsequently arrested by police.

Emergency responders in Elk Grove and Sacramento Country have received over 1,600 accidental 911 calls from Apple repair facilities in the past four months.

The calls waste valuable time and resources and potentially slow down the response to genuine emergencies. The problem seems to have been introduced by iOS 11, which added an Emergency SOS shortcut to iPhone and Apple Watch.

Apple released its second iOS 10.2 beta this week, and while we all got excited for brand new emojis and the TV app, we missed an awesome new feature that’s even more important: Emergency SOS.

Adopted from Apple Watch, Emergency SOS lets you discreetly contact the police in an emergency.

When Apple launches watchOS 3 to the public later this fall, Apple Watch wearers will be able to automatically call for help if they find themselves in an emergency situation.

The new SOS feature in watchOS 3 will make Apple Watch even more of a lifesaver for wearers by placing a 911 call within 10 seconds, even if they don’t have their iPhone.

Here’s how it works: