Samsung’s Galaxy S III   is going to sell incredibly well in the US, there’s no doubt about  that, but what’s impressive is the exact phone – not phones – that will  be setting those records. The Korean company has previously seen its US  launches hamstrung by each carrier demanding a specially-crafted version  of whichever device is next on the roadmap, a time-wasting process  that’s of arguably little benefit to end-users. The five US carrier launch  of the Galaxy S III, though, sees all that change. One design, one  name, one more notch on Samsung’s rise in the smartphone business.