I can't use GPS navigation

GPS has been turned off

Turn on GPS.

1 of 8 steps Press the menu icon.
2 of 8 steps Press Settings.
3 of 8 steps Press Location and security.
4 of 8 steps Press Use wireless networks to turn the function on or off.If you turn on network-based GPS:
5 of 8 steps Press Agree.
6 of 8 steps Press Use GPS satellites to turn the function on or off.
7 of 8 steps Press the Home key to return to the home screen.