Currently Being ModeratedFeb 1, 2013 12:19 PM (in response to Fernando4ASC)
Understanding the Side Switch > http://support.apple.com/kb/HT4085
Close All Open Apps... Perform a Reset... Try again...
Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.