verykool s4510 Luna 4G HSPA+ 4.5" IPS LCD Unlocked GSM Smartphone Android 4.2 Bluetooth 1.2GHz Dual-Core 8MP WiFi USB MP3 Email AT&T TMobile (yellow) UNLOCKED - NO CONTRACT REQUIRED. this factory unlocked 3G HSPA+ 4.5" LCD smartphone is guaranteed to work on every GSM carrier across the US including: AT&T, T-Mobile, Tracfone, etc. *not compatible: CDMA networks like Verizon or Sprint* GLOBAL COMPATIBILITY/DUAL SIM: Vacationing? Studying abroad? verykool has you covered. This GSM phone works in 126+ countries across the globe, including: Central/South America, Africa, Europe, Asia, the Caribbean, & more (see GSM bands below) BETTER CAMERAS, MORE STORAGE. Capture and share your favorite moments with an 8MP rear camera (LED flash/ Auto-Focus) & a 2MP front camera. Play games? Store a lot of music/photos? 4GB of internal storage & an external 32GB MicroSD slot has you covered POWERED BY MEDIATEK. Dual-Core Processor. This Dual-core ultra-fast MediaTek MT6572 processor is powered by two 1.2GHz Cortex-A7 ARM cores. FREE ACCESSORIES/U.S. COMPANY: ($45 value) free UL certified travel charger, headphones, & a micro USB data cable. We are a publicly traded company based in San Diego, CA (nasdaq: IFON) & offer a 1-Year 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 select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.