http://www.washingtonpost.com/blogs/the-switch/wp/2018/06/18/apples-ios-12-will-automatically-share-location-data-when-people-dial-911/

Your iPhone will soon be able to share your location data automatically if you ever have to call 911, Apple announced Monday.

The feature is designed to give first responders faster and more accurate information, helping to reduce the time it takes for emergency services to arrive. According to the Federal Communications Commission, about  70 percent of 911 calls are made by people using mobile phones. But outdated systems make it difficult for emergency call centers to pinpoint a a mobile user's location, Apple said.