How does the OnStar Guardian app work?
By using the sensors in your smartphone, including the accelerometer, the app can detect when you are in a moving vehicle. When a crash is detected on an Android device, the app can automatically connect you with an OnStar Emergency-Certified Advisor, who can contact First Responders and your Emergency Contact. When a crash is detected on an Apple® device, the app alerts an OnStar Emergency-Certified Advisor, who will then call your smartphone, requiring someone in the vehicle to answer the call. Advisors can also contact First Responders and your Emergency Contact.
Enabling location permissions within the app allow an OnStar Advisor to identify your smartphone’s location and contact First Responders for help, even if you can’t ask for it.