1. Swipe down from the Notification bar, then select the Settings icon.
   
2. ENABLE/DISABLE CELLULAR DATA: Select Data usage.
   
3. Select the Cellular data switch.
   
4. CHANGE MONTHLY BILLING CYCLE DATE: From the Data usage screen, select Billing cycle.
   
5. Select Billing cycle. Set the desired Usage cycle reset date, then select SET.
   
6. ENABLE MONTHLY DATA LIMIT: From the Billing cycle screen, select the Set data limit switch.
   Note: Review the Limiting data usage prompt, then select OK. To set a data usage limit, select Data limit. Enter the desired data usage limit, then select SET.
   
7. EDIT MONTHLY DATA LIMIT: Select Data limit. Enter the desired data usage limit, then select SET.
   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.
   
8. VIEW DATA USAGE BY APP: From the Data usage screen, select Cellular data usage.
   
9. Scroll to view data usage by app.
   Note: To restrict apps from using data while running the background, from the Cellular data usage screen select the desired app then select the Background data switch. Your myAT&T account is also another way to manage your wireless usage.
   
10. VIEW DATA THROUGH AT&T AllAccess: From the home screen, select the AT&T AllAccess Widget.
    
11. Your data usage will be displayed. To turn a data alert on or off, select the Data Alert switch. Select and drag the Data alert icon to the desired location.