Familiarise With Your Home Screen The screen you see on the smartphone is the Home screen. You can add more screens when you have more Apps and Widgets installed. You may swipe left and right to navigate from one screen to another. Touch/Press on the Apps Container to see the installed Apps. Installed apps will appear as below. You may hold and drag an app to the Home Screen so that that app can be launched from the Home Screen whenever required. Drag the Settings App to the Home Screen. Now the Settings App is on the Home Screen as seen above. Press the Settings App to open it as given below. From Settings, select Data usage. You may see the Cellular data as Off because earlier we used WIFI while resetting the phone. Slide it to right to Switch on Cellular data. When the selector is slided to right, its color will turn to be Green, meaning that Cellular data is on. You should do this only after charging the Sim with a data pack. Now the phone is connected to internet thru Sim card dat...