Motorola Moto X -  16GB, Unlocked Phone - US Warranty - White Display: 4.7-inches Camera: 10-MP Processor Speed: 1.7 GHz OS: Android 4.2 (Jelly Bean) Model: XT1058 Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20 and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin. 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. 16 GB Storage Capacity (Estimated Free Space 11.5 GB)