Just throwing this out there: It would be nice if each account was allotted a bit of free usage each month. For the last two billing periods I've had to pay $3 for the usage of less than 2 text messages.
For people that don't use texting or data, but don't want to turn it off.. if only for emergency usage, it would be helpful if a free buffer was available so they didn't end up paying $3 for almost no usage.
I think it would be fair if the $6 device fee allotted you to 3 minutes, 3 texts and 3MB each month at no additional cost.
I'm not going to fret over $3 any time soon.. since I am paying much less than any alternatives anyway... but I think this would allow for a better customer experience.