From the right edge of the screen, swipe left to display the charms menu.
If using a mouse, move the pointer to the upper or lower-right corner of the Start screen then move up/down.
Alternatively, press the Windows+C keys ( +C) located on the physical keyboard (if available).
Tap or click Settings.
Tap or click the Wireless network icon .
Tap or click the Mobile broadband switch to turn on or off .
Depending upon personalization options, the switch colors may differ from the examples depicted above.