Apple iPhone 4S 32GB White - Unlocked Factory Unlocked by Apple, Never Opened New In Shrink-Wrap and Original Packaging Includes 1 Year Limited Manufacturer's Warranty Ability to Add Apple Care Protection within 30 Days of Purchase 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.