This is a test of commonsense. Complete the next sentence:

How to manage 3 g usage on an android device with 3 g watchdog
Download 3 g watchdog and appdroid from the android market (preferably over wifi).
Open 3 g watchdog.
Define your data plan's quota and starting date.
If you are unsure of the date and plan, contact your mobile carrier and inquire. Set the percentage of the quota at which you would like to be warned of your high 3 g usage.