Don't know how to enable/disable the GPS (Android)

Go to Settings -> Scroll to find Location -> Move the slider to the right to disable the GPS feature, to the left, to enable it.

Note: Most mobile devices require the GPS feature to be enabled as part of the anti-theft feature, which allows you to locate your device if it's been lost in stolen. Bear this in mind before you decide to disable the location service.

1. Swipe down from the top of the screen with one finger and tap the icon in the top-right corner, or swipe down with two fingers to avoid the notification area (depends on the model)
   
   
2. Tap the Location icon to enable or disable the GPS (on most devices, if the icon is colored white that means that the GPS is enabled, if it's grey, then it's disabled)
   
   * The quick access menu's appearance is different from one device to another, but, the icons are the same as the ones shown below