In anticipation of the growing footprint of its WiMAX (4G) service, the beleaguered mobile operator Sprint launched a 3G/4G dual-mode device, likely to go on sale on Dec. 21. The Sprint 3G/4G USB Modem U300, made by Franklin Wireless will cost $150 and will work with Sprint’s EVDO network and on Sprint’s Baltimore WiMAX network. The service will launch in Portland very soon. Other cities are likely to follow next year as Clearwire (the combo company that includes Clearwire & Sprint’s 4G efforts and has liberal funding from others) will roll out its Clear service next year. Sprint claims that folks can get average downlink speeds of 2-4 Mbps within Baltimore 4G service areas and 600 Kbps – 1.4 Mbps on their EVDO network.

Bottomline: Just because the device is available doesn’t mean you need to buy it. As Stacey pointed out earlier that the credit crunch can slow down the Clear rollout and the device well might not be useful in many places. You are better off going for a cheaper 3G-only card for now.

OK, that is a bit over the top! Nielsen Mobile came out with a report that points out that there were 13 million mobile data cards in the U.S. at the end of June 2008. Not a big surprise, since wireless carriers in the U.S. are having a blockbuster year as far as mobile Internet revenues are concerned. The GigaOM Team has about seven of them and uses them for business and filing stuff when on the road. Apparently, so do a lot of people. However, Nielsen points out that there is a change in the making.

…Nielsen’s research reveals that the cards are beginning to play an important role in home and personal Internet access, as well. In fact, 43 percent of mobile data card users report they most often use their data card at home, while 15 percent say they typically use the card at work. Additionally, one in five (21 percent) data card subscribers take advantage of ubiquitous access by heading outdoors and 9 percent use their card while commuting.

An easy explanation would be better price packages and higher speed tiers, thanks to newer 3G technologies. Of the nearly 1,300 mobile data card users Nielsen surveyed, more than 99 percent still kept their wired broadband service: 40 percent of card users also have cable broadband and 34 percent also have DSL in their home. That number can jump to 59 percent, giving wired carriers something to think about.

Maybe the wireless guys need to rethink their wireless broadband plans and bring them forward. For phone companies the prospect of being cannibalized by wireless data connections must be scarier than losing them to voice connections. No wonder they started to limit bandwidth transfers on their connections. (Photo courtesy: Novatel Wireless.)