Samsung Galaxy J3 (2016)
Android 5.1.1
View data usage
You can see how much mobile data you've used when you use the browser or send and receive email messages etc.
1. 1. Find "Data usage"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Data usage.
2. 2. View data usage
The data usage is displayed.
3. 3. Return to the home screen
Press the Home key to return to the home screen.