Even without signal, the app will still be able to monitor your GPS and store your journey. It will then send its data once connectivity has been restored. Ben Richardson 26 April 2019 12:03 Updated Follow Related articles Linking your account to the IN-SYNC hub The app listens to your phone's movements to determine if it is driving. If so, it will then send your movement data to the server. Comments 0 comments Please sign in to leave a comment.