BLU Studio X8 HD - 5.0" GSM Unlocked Smartphone -Black Unlocked Dual SIM smartphone, Android 4.4 Kit Kat This device accepts 2G GSM Sim Cards ONLY (e.g., Nationwide on T-Mobile, Straight Talk, Simple Mobile, etc.). This device WILL NOT WORK with 3G-only providers (e.g., AT&T) or CDMA Carriers (e.g., Verizon, Sprint, Boost, PagePlus, etc.) 5.0 HD display with IPS technology; 5MP Main Camera + 5MP Front Camera MeditaTek 1.4 GHz octa-core Processor GPU arm MALI 450; 4GB Internal memory 512MB RAM Micro SD up to 64GB GSM Quad band 2G (850/900/1800/1900). Refer to user manual, below NOTE: Refer User Manual on Technical Specification before use