Motorola RAZR V3 Gold Cellular Phone (Unlocked) 3.86" x 2.09" x 0.54" GSM 850 / GSM 900 / GSM 1800 / GSM 1900 Talk: 6.7 hours - Standby: 250 hours Phone Book Capacity 1000 Weight 3.42 oz 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.