The BLU S1 embodies a perfect balance of art and functional qualities. Designed to exceed the standard form, the metallic paint along with state of the art curved glass touch panel set the S1 apart from its competitors. Coupled with the latest Android 7. 0 Nougat OS, the user experience is impeccable. Compatible with Sprint, Boost, AT&T, T-Mobile, Metro PCS and all there MVNO's.