Don't know how to enable/disable mobile data

Go to Settings -> Tap Cellular -> Move the slider next to Cellular Data to the right to enable the mobile data, or to the left to disable it.

To enable mobile data, follow the steps below:

To disable mobile data, follow the steps below:

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 number and manufacturer of the device)
   
   
2. Tap the mobile data icon to enable or disable the mobile data (on most devices, if the icon is colored white that means that the mobile data 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
   
   

   

To enable the mobile data, go to Settings -> Data usage -> Move the slider next to mobile data traffic to the right.

To disable the mobile data traffic, repeat the previous steps and move the slider to the left.

To enable mobile data, go to Settings (Swipe left to access the apps list) -> mobile network -> Tap Data connection and select ON

To disable the mobile data, repeat the previous steps and select OFF