<a href="http://ctia.cnet.com"><img src="http://i.i.cbsi.com/cnwk.1d/i/ts/ctia/2007/ctia_ss.jpg" width="312" height="46" border="0" alt="CNET covers CTIA 2007" /></a><br /> Samsung's new UpStage for Sprint is a cell phone with a split personality. Check it out in our slide show.