Motorola DROID RAZR M XT907 Factory Unlocked GSM Android Smartphone, Black 8-MP camera; full HD 1080p camcorder; front-facing video chat camera; Bluetooth stereo music; 8GB me Processor Speed: 1.5 GHz OS: Android 4.1 (Jelly Bean) Wireless-N Wi-Fi networking (with optional Wi-Fi Mobile Hotspot service) 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.