BLU Vivo Air LTE Factory Unlocked Phone - Retail Packaging - White The slimmest LTE Smartphone in the world at only 5.1 mm, made entirely out of solid aluminum and Corning Gorilla Glass on front and back Remarkably Vivid and Bright Super AMOLED 4.8-inch HD Display; 8MP Camera with Sony IMX 219 Sensor + LED Flash with HD video recording (1080p), 5MP Wide angle Front Camera 16GB internal with 2GB RAM, Qualcomm Snapdragon 410, 64-Bit 1.2 GHz CPU, Android L v5.0, Upgradeable to Android M v6.0 4G LTE: T-Mobile: Supported Nationwide with Bands 2/4 including MVNO's on T-Mobile such as Metro PCS, Simple Mobile, Go Smart, Straight Talk, AT&T: Limited Support for markets where AT&T has rolled out Band 2 and 4.Does not support Band 17 Unlocked, and Single SIM, will work on any GSM Network in the World