iPhone bonus feature
Say you’re waiting for the train and some one approaches you (for food or change or because they may know you or whatever), you can give them a scared animal look—cold and angry, surprised and a little terrified, altogether impatient—and tell them “No, man; sorry” as they’re still trying to communicate to your deaf ears through your headphones and thick skull just before you feel like an asshole because it was meant to be just a harmless exchange and—and this is the real bonus, folks—then write about it on Tumblr!
You can’t do that on a stupid landline.