Last week we got a little too excited about the impending expansion of cell phone service in the Metro system, but now it's official: T-Mobile, AT&T, and Sprint Nextel customers should be able to use their cell phones inside Metro's 20 busiest stations starting first thing Friday morning (the Post says it'll be turned on at midnight, but of course the system will be closed by then). Verizon customers could already access their network inside the same stations, and they will continue to have that service after the change.

You might be able to finally use your non-Verizon cell phone in Metro tunnels. Just don't hold your breath.
Written by DCist contributor Claire Compton