[eli]

I've heard that they do deep packet inspection so if they see e.g. a desktop Chrome user agent, they know you're not on a phone. Sounds excessive, but it could be true. (And yes, you could probably find ways around that, but I'm not sure what the goal is here.)

If you want a portable data service for your laptop, this is not the plan for you. I was using Clear (Sprint WiMAX) for a while and it was relatively cheap and fast. Only downside is the limited coverage area -- check the map before you buy.