If your device fails to acquire a signal, restart your device. If the problem persists after the restart, Follow the link to open the Device Diagnostics Page. Follow the video and once you reach the Diagnostics Page on your device, empty the system cache and restart the device again. If you still can not get a signal, the devices signal receiver may be damaged. Head over to the Garmin Dezl 760LMT Troubleshooting Page to help you resolve this issue.