Something Really Stupid

There is free wi-fi in the subway stations.  Only the stations, the tunnels weren't wired.

Sometimes this wi-fi is flaky.

Sometimes it doesn't work at all. But never fear, if you cannot be without wi-fi for 10 minutes, you can get help!

 You can call for help!

Nevermind that THERE IS NO CELL RECEPTION UNDERGROUND. 
And if there was, you would not need the wi-fi!

GENIUSES!!