I have requirement that I’m unsure about the possibility of. It’s an app that has a indefinitely ran background job on iOS and Android that periodically check if the phone is in a geofence zone (Polygon of set coordinates). I’ve researched this and have discovered some edgecases, such as the behaviour of background jobs if the phone is restarted, app crashed, background job is killed by the OS (It’s after all checking GPS coordinates every few seconds).