Set a monthly data limit notification
You can be notified when you reach your monthly data limit, or when you reach a certain percentage of your monthly data
limit. Depending on your wireless service provider, this feature might not be available.
On the home screen, swipe down from the top of the screen.
Settings > App Manager > Device Monitor.
> Data Usage Settings.
In the Mobile Data Limit field, type your monthly data limit in megabytes.
Move the Early Data Limit Notification slider to receive an early notification when you are approaching your monthly
To change when your monthly data usage cycle starts each month, in the Monthly Reset Date drop-down list, tap a