verykool R28 Denali 2.4" LCD Unlocked GSM Smartphone Android Dual SIM Wifi Bluetooth Will work on AT&T T-Mobile - Carrier Packaging - Black Unlocked 3G 2.4 LCD smartphone guaranteed to work on all GSM carriers in US (including AT&T, T-Mobile, Walmart Family, Cricket, Simple Mobile, Straight Talk, etc.) & the world that supports 3G bands. Does not work with CDMA networks like Verizon/Sprint Runs on Nucleus 64MB RAM, 128MB ROM, external (Micro SD) up to 32GB; 5Mpx camera; FM Radio, Bluetooth, USB, 1400mAH battery up to 7 hrs. of talk time, 10 standby days Dual SIM cards allow the user to easily switch carriers throughout the world, perfect for the international traveler, or the everyday user who loves a no contract phone Verykool is a San Diego-based company that provides a 1-Year Comprehensive Warranty with every phone (NASDAQ: IFON), so you can rest assured you're not buying from a foreign company with a name you can't pronounce or expensive warranty issues FREE Accessories Included: ($45 value) travel adapter, headphones, and a data cable