1. From the home screen, swipe to then tap the AT&T folder.
   Note: To check your current month's data usage dial *data# (*3282#) on your mobile phone to receive a text message with the current bill cycle's usage.
   
2. Tap Usage Manager.
   
3. Under the 'Data' tab, data usage will be displayed for the selected billing cycle.
   
4. To change the displayed billing cycle, tap the Data usage cycle drop-down.
   
5. Tap the desired billing cycle.
   
6. To change the monthly billing cycle start date, tap Change cycle....
   
7. Scroll to the desired date.
   
8. Tap Set.
   
9. To set a monthly data limit, tap Limit mobile data usage.
   Note: When the mobile data limit is active and has been reached, the mobile data block will remain in effect until mobile data is manually re-enabled on the device, the limit threshold is changed to a higher value, or a new data usage cycle begins. If you set data usage limits on your device, they do not communicate with AT&T systems. You will still receive AT&T system generated notifications as you approach your data limits.
   
10. Tap OK.
    
11. Drag the Warning marker up or down to set the level at which you will be warned about your monthly data usage.
    
12. Drag the Limit marker up or down to set the monthly data usage limit.
    
13. The data warning and limit will save automatically.
    
14. Scroll down to view data usage broken down by app.