This CAN be implemented in "Smart Limits", if AT&T chooses to fulfuil our request. I'd like to control the amount of data used, not just "on/off". I can control the purchase $ limit, and the text limit, I should be able to control the data limit.
There is an option on the phone to limit and cap the data, but there is no password control on that. My resourceful child told ME how to find it. That won't work.
AT&T: We, as your customers, are requesting the ability to control data usage in Smart Limits, with a cap set by line. (Obviuously, of my 3GB, I'd want to give my number 2.5GB, and my child 500MB.)