Most high-profile smartphones launch exclusively on one of the major carriers in the U.S. The Samsung Galaxy S, though, will come to market via all of them under different names, different industrial designs, and, in one case, with different input options. And yet, its screen's quality and size - big but not too big - will certainly make it a contender at all of them.
But the handset will encounter anything but a level playing field in its respective portfolios. The Galaxy S will provide a good lab in which to study how much motivation to push a high-end portfolio device counts versus the muscle of having the largest subscriber bases but stronger handset competition. With the Galaxy S'
