Best phones not sold by US carriers (and how to get them)
These are all amazing phones that, for whatever reason, the Big Four -- Verizon, AT&T, Sprint, and T-Mobile -- don't carry in the US. But you can still buy them unlocked, usually direct from the manufacturer or a retailer, and they'll still work with GSM networks. You just need to check 2G/3G/4G compatibility with your carrier.