I have an unlimited data plan with T-Mobile. I've installed the modem driver so that I can use my Audiovox SMT5600 phone as a modem. If you create a dialup connection to *99# the phone connects directly to GPRS and streams that Internet connection to your computer. How cool is that? It supports a max connection speed of 230 Kpbs, although at my current location it's no better than modem speeds. Still...in a pinch, it gets me online. Cool!