Please be aware of hidden charges!
I cancelled my service due to inability to use a wireless PC Card outside the city (they do not offer coverage in majority of Texas), and agreed to the early cancelation fee ($200).
I cancelled the service on August 6th, and I was charged for another month of service on August 7th. Now the customer service tells me that they will not refund this charge because the equipment was not received in 7 days from the date of cancellation. What I have been told at the time of cancellation is that I have 10 days to return the PC Card from the date Clearwire sends me the return label.

Just stay away from this company! Poor customer service and limited coverage areas!