How to Set Mobile Data Limit in android mobiles

Want to account for how far your usage is through your monthly mobile data limit? For those who have ICS and above, there is a feature which lets you account for how much of the quota you could have left.

1. Head over to Settings > Data Usage.
2. Set your data limit by dragging the orange line to reflect your monthly quota.
3. Set your data usage cycle based on when your "month" starts and ends, and you’re done.

You will be alerted as soon as you hit the limit you get set. Note that the tracked data usage of your phone may vary somewhat than your carrier’s tracking.