Comcast launched its personal 4G/3G Mobile Hotspot designed to allow users to simultaneously connect up to five WiFi-enabled devices to the Internet while on the go. The pocket-sized device is a WiFi router that uses Xfinity Internet 2go service to create a portable WiFi hotspot. It offers download speeds of up to 6 Mbps with 4G service and up to 1.4 Mbps with 3G service.