It is been quite a time since the Xperia X series has been released stateside, Sony is now selling X Performance and Xperia XA in US. Both smartphones are selling carrier-free – and will sell at Amazon, Best Buy, B&H Photo Video, and Reagan Wireless.
The Xperia X Performance 128 GB variant with SanDisk microSD will set you back for $699.99, while Xperia XA with 64GB SD card will cost you $279.99. However, you will not get a free microSD for Xperia X Performance if you are buying the handset from Amazon.
Go and check the Sony Mobile US website and find all the links and places where these latest high-end Xperias are available. The smartphones will be compatible with GSM/LTE carriers like AT&T and T-Mobile, but will not work with CDMA carriers including Verizon and Sprint.