In Settings on iPhone, choose which apps can send notifications, change the alert sound, allow government alerts, and more. Smart911 is a free service that will notify you via email, text, phone or social media when there are emergencies.To set up iPhone Notifications on Mac, first connect to iPhone Mirroring. See Use iPhone Mirroring on your Mac. The state's exposure notification system usually works through an app. But starting Monday, some iPhone users can opt in without it. Hire the best freelance iOS Developers in Minnesota on Upworkâ„¢, the world's top freelancing website. Minnesota's COVIDaware MN exposure notification system will expand to allow more Minnesotans to protect themselves and their loved ones. The APNs acts as a portal between your OpManager server and iOS device for delivering the notification payload to the application. Push Notification Mechanism.