BLU Studio 7.0 II -Unlocked Smartphone - Global GSM - Gold Unlocked Smartphone, with Android 5.0 Lollipop 8GB internal storage 1GB RAM with Micro SD Slot up to 64GB MediaTek Quad Core 1.3 GHz Processor with Mail 400 GPU 5MP Main Camera, VGA Front Camera GSM Quad Band 3G HSPA+ (850/1900/2100): US Compatibility: AT&T, T-Mobile, Cricket, , and others, including most 3G UMTS/HSPA+ Networks when roaming outside the US. Please refer the User Manual before use.