See also:

AM radio reception
AM signals, because of their low frequency, can bend around objects and skip along the ground. In addition, the signals can be bounced off the ionosphere and bent back to earth. Because of thes ...

Сhange the display brightness button
To change the display brightness, press the button. Pressing the button again will change the display to the day or the night display. If no operation is performed within 5 seconds, the dis ...

Touch screen maintenance
If you clean the display screen, use a dry, soft cloth. If additional cleaning is necessary, use a small amount of neutral detergent with a soft cloth. Never spray the screen with water or deter ...