The Sprint 3G/4G USB 250U mobile broadband modem, which is identical to it CLEAR Internet + cousin, is Sprint’s latest mobile broadband modem offering. Made by Sierra Wireless, the modem takes advantage of Sprint’s 4G WiMAX network for speeds up to ten times faster than 3G, Sprint claims. That’s assuming you are in an area with 4G service, which currently includes over 60 cities such as Chicago, Atlanta, Dallas, Houston, Philadelphia, Las Vegas, Portland, Kansas City, Seattle, Charlotte, etc. However, if you are in New York, Los Angeles or San Francisco, you are out of luck, at least when it comes to 4G service, though you will still get 3G EVDO Rev A. data service in any location that 4G service isn’t available. This should change soon as Sprint says that these cities along with many others will be added by the end of 2010.