Samsung Galaxy S6 SM-G920i Unlocked Cellphone, 32GB, Black Sapphire,INTERNATIONAL VERSION NO WARRANTY Reimagined Design Inside and Out 5.1" Quad HD Super AMOLED display 16MP rear-facing camera Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.