Rand McNally has designed OverDryve™ for speed and reliability. However, from time to time, all Android devices run into problems. If your unit becomes unresponsive for any reason, it’s always best to restart the unit by turning it off and on again.
Restarting the Device
If the unit is unresponsive and you don’t see the power down button appear on the screen, hold down the power button for 10 to 15 seconds and the device will turn off completely. Once the unit has shut down, press and hold the power button for 2 to 4 seconds to turn it back on.