I work as a cellular messaging specialist for a major IT systems integrator in DC and I am doing a little side research on my own, to better help me come up with new ways to deploy mobile solutions.
I am trying to get over 1000 responses so I can get a good solid base line of average user data consumption. I am going to be posting this on other Blackberry forums to so if you see this question elsewhere and have answered it here please don't answer it again.
I don't believe you can do it right from the device, you would need to take a look at your monthly bill.
I understand there are unlimited but most carriers also offer smaller packages as well. Alot of my current clients are government agencies and I am hoping to use this data as a way to help them cut their monthly ceelphone cost so that they can use those tax dollars else where.