When the Devil is near, radios and telephones pick up nothing but static.
WiFi, too.
He likes to go to Starbucks, just to mess with the hipsters on their Macbooks and iPads and iPhones.
Of course, the same thing happens when you go into a tunnel. Radio waves have a hard time getting through all that rock.
Before you start screaming “THE DEVIL!” over and over, check to see if you’re in a tunnel first.
If you’re in a tunnel, relax. You’re in a tunnel. It’s not the Devil.
Unless, of course, the Devil is in the tunnel with you.