The follow-up to AT&T's Unite LTE hotspot has arrived in time to keep folks connected during their holiday travels. Like its predecessor, the newly launched Unite Pro has a 2.4-inch touchscreen panel where users can change the WiFi network's info, as well as monitor usage and battery life. The Unite Pro, however, ups the ante by connecting to as many as 15 gadgets, while promising up to 16 hours of use in one charge and having the capability to juice up a device jacked into it. Wh
