We had earlier seen about the steps required to turn off the location services on iPhone and iPad. And both these articles are for devices with iOS 5. In iOS 6, Location Services is available under the General Settings.
Step 1: Press the menu button on iOS 6 device (iPhone or iPad) to access the Home screen.
Step 2: Tap the settings icon on the Home screen.
Step 3: Then tap the General option in the Settings screen.
Step 4: Scroll down the General Settings screen and tap the Restrictions option. You will be prompted to enter the pass code to access the Restrictions option.
Step 5: In the Restriction screen, scroll down to Privacy section and tap the Location Services option. This should provide iPhone or iPad users with the option to turn off Location Services.