Ah, the sweet sound of silence. No phone calls coming in, no texts buzzbuzzing your phone — wait, why hasn’t he called? Is he EVER going to text? Perhaps you’ve been feeling a bit unnerved about your quiet iPhones, iOS6 users, and if you scheduled its “Do Not Disturb” function to begin and end at a certain time, it’s probably still on and won’t turn off until you make it turn off. [More]