Samsung Galaxy S II GT-I9100 Unlocked Phone with 8MP Camera and Touchscreen - International Version (Black) The Samsung Galaxy S II is an Android Smartphone with touchscreen 8MP Camera, Dual-core 1.2GHz, A-GPS support User memory: 16GB,Expandable memory (MicroSD up to 32GB) Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.