Few devices have been as disruptive to modern culture as the cellphone. Forget just talking to people from anywhere, with no wires involved. Today, these amazing devices enable all sorts of good and bad behavior, including Facebook rants, Twitter fights, selfies and Instagram photos of delicious delicacies and drunken text messages to those better deleted from our contacts list. It’s nearly impossible — and, frankly, terrifying — to imagine a world without smartphones.