At your child's concert and getting a lot of text messages from your boss? Wish you could let him know that you are unavailable right now? Better yet, wish you could keep your phone on but not bothered by ringing or vibrating but still receive messages and calls? Do Not Disturb lets you put your phone into Do Not Disturb mode (deep silent). It also lets you set up an away message and send that message back to those texting or calling you to let them know that you are unable to use your phone but will return their call/message when you are available.