My Sony Xperia XZ Premium uses a large amount of mobile data

Slide your finger downwards starting from the top of the screen.

Press the settings icon.

Press Nofications.

Press the required app.

Press the indicator next to 'Block all' to turn the function on or off.

Press the Home key to return to the home screen.

Press Apps.

Press Play Store.

Slide your finger right starting from the left side of the screen.

Press Settings.

Press Auto-update apps.

Press Do not auto-update apps to turn off the function.

Press Auto-update apps over Wi-Fi only to turn on the function.

Press the Home key to return to the home screen.