Samsung Galaxy A5 2016 A510M DUOS 16GB Unlocked GSM 4G LTE Octa-Core Android Smartphone w/ 13 Megapixel Camera - Gold - International Version, No Warranty 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 MetroPCS, and select prepaid carriers). HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 17(700), 28(700) - A510M Display Type: 5.2" Super AMOLED Gorilla Glass 4, Supports Rapid Charge Operating System, Android 5.1.1 Lollipop CPU: Octa-Core Exynos 7 Octa 7580 / ARM Cortex-A57 1600Mhz 64bits Internal Memory: 16GB, 2GB LPDDR3 + microSD Slot Expandable up to 128GB Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.