It should be mentioned it's a slightly stretched definition of "unlimited data". From Virgin Mobile [1]:
Once 2.5GB (3.5 if paying for "mobile hotspot") of data is consumed during the monthly cycle, data speeds may be reduced to 256 kbps or below for the rest of that monthly plan cycle.
It was only 200MB last time I looked (although that may not have been with Virgin) which is why I went for a contract plan. Also, outside the iPhone, the selection is really poor.
Once 2.5GB (3.5 if paying for "mobile hotspot") of data is consumed during the monthly cycle, data speeds may be reduced to 256 kbps or below for the rest of that monthly plan cycle.
It was only 200MB last time I looked (although that may not have been with Virgin) which is why I went for a contract plan. Also, outside the iPhone, the selection is really poor.
1) http://www.virginmobileusa.com/cell-phone-plans/beyond-talk-...