Cell phones in Korea are pretty awesome. They've invented some sort of futuristic device that is attached to many phones. I'm not sure if I can describe it in my primitive language, but it appears to be a telescoping metal protrusion that extends out of the top of the phone. From observing the future people using the device, it appears to be correlated with watching streaming tv in the subway (yes, in a metal box, underground), so I'm guessing that it is related to improving reception and receiving transmissions. But I could be wrong.
However, I can't get over this nagging feeling that this is a technology that once died but was serendipitously rediscovered. Probably just a technological deja vu, though.