KuWFi 4G LTE Pocket WiFi Router Unlocked LTE 4G Mobile WiFi Hotspot Portable 4G Router with sim Card Slot Goods for Travel and Business Trip Support LTE FDD B1/B3/B5 Support AT&T 4G Lte Mobile Router gives you high-speed access to the Internet wherever you are and lets you share it on the go Connect Up to 10 wireless devices ,if signal not stable please need to locked in 4G signal first The router can work USA SIM card 4G LTE Sprint TDD 2500mhz B41 , Redzone Wireless TDD 2500MHZ B41 , SpeedConnect TDD 2500MHZ B41, U.S. Cellular FDD B5 850MHZ ,AT&T FDD B5 850MHZ Supports WEB based management and configuration and change passward or APN Connect Up to 10 wireless devices EASY to use carry in hand. video of the router how to use step link :https://youtu.be/482ypXjmToQ