Galaxy Ace 4 Lite G313ML Unlocked GSM HSPA+ Android Smartphone - Black Internal Memory: 4GB, 512 MB RAM + microSD Slot Expandable up to 64GB 4" TFT Display Capacitive Multi-Touchscreen Android v4.4.2 (KitKat), 1.2 GHz Single-Core Processor 2G: GSM 850 / 900 / 1800 / 1900, 3G/HSPA+: 850 / 1900 / 2100 This device is unlocked and may be used with any GSM carrier that uses a frequency or band that this device supports. A SIM card and service plan must be purchased separately. Unlocked GSM phones will not work with CDMA networks like Boost, Sprint or Verizon 3 Megapixel Camera (2048 x 1536 pixels) 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.