Excerpt from “Managing your Mobile Data”
Who Can Use My Data?
Going back into “Settings” then going to “Mobile Data”, or “Cellular”, and looking back over that list of apps on your phone. To the right of the app title there is a switch that will disable that app’s access to the internet when you don’t have Wi-Fi, there four not using your data plan. It is good to disable games that either don’t need data but for ads, or games that just use a lot of data, and any other app that you know will not be crucial and worth using data for.