iRulu V1 5.5" QHD Android 4.4 KitKat Smartphone MT6582 Quad core 1.3GHZ Real camera 8.0MP Dual camera Dual sim Card Cellphone DATA speed 21Mb/s 3G: WCDMA 850/1900/2100; GSM: 850/900/1800/1900 Unlocked smartphone: Nationwide AT&T: Cricket Wireless, Straight Talk, Net10, H20 Wireless, 420 Wireless, Black Wireless, Consumer Cellular, Pure TalkUSA, Red Pocket, Telcel America. T-Mobile: MetroPCS, Lyca, Speedtalk, Go Smart, Simple Mobile, Net10, Straight Talk, Solavei, Ultra Mobile, Telcel America, Walmart Family Mobile. MTK6582 Quad-core: 1.3GHz Cortex-A7 Processor, 1G RAM/8G ROM, Support TF card, expandable to 32GB Dual camera: Front 5.0MP Back 8.0MP convenient for you to capture wonderful moments, Also perfect for video chatting online 5.5inch large screen: QHD 960 x 540, perfect for you to play games or stream videoes 2350mAh Large Capacity Battery: No need to worry about the electricity Durable for you to listen to the music,stream videos...(almost 5 days stand-by)