A few cities in the US have wireless service in their subway systems, but not Los Angeles. Take a trip to Wilshire Boulevard, for example, and you'll stay incommunicado until you're back above ground. You won't be out of touch for too much longer, though. The city and InSite Wireless have started deploying both cellular service and WiFi at subway stations, beginning with the Red Line. The launch will be modest early on, with four stations getting WiFi by May and cellular service coming in August. LA's plans are much more ambitious in the next couple of years, however. A second wave should get both the Purple Line and more of the Red Line up and running by June 2016, while the Gold Line railway's tunnels should be connected by March 2017.