Get ready for a small deluge of Galaxy S 4 filings at the FCC in the near future. Just a couple of weeks after Samsung's flagship hit the US agency in its international guise, we're now seeing the first US editions of the smartphone receive approval, starting with both MetroPCS (SCH-R970) and Sprint (SPH-L720) examples. Either has CDMA, EV-DO and LTE, although there's variances you'll want to watch for if you're free to choose between carriers: the Sprint version
