Sony Xperia 10 iii
Viewing data usage
You can see how much mobile data you've used when you've used the browser or sent and received email messages etc.
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Network and Internet.
Press Mobile network.
Press App data usage.
The total data usage is displayed.
The data usage for each application is displayed below the name of the application.
Press the Home key to return to the home screen.