What is the Mobile Data button for?

What is the Mobile Data button for?

Occasionally a mobile phone will lose connection to the mobile network and the mobile data setting needs to be turned on again.

If you see the 'Mobile Data' menu button (1), there has been a loss of connection.  

           
      (1) Mobile Data menu button

If you see this menu button, click on it and allow "Mobile data" to be used by clicking the slider at the right from "Off" (2) to "On" (3)














(2) Mobile data is shown OFF












(3) Mobile data is shown ON