Currently Being ModeratedNov 24, 2012 11:14 AM (in response to cambridge diva)
Do Not Disturb is not like Airplane Mode which blocks all incoming and outgoing signals. Do Not Disturb simply stops the alert sounds so you're not interrupted by a call or text while you sleep, play Halo or whatever it is your doing and you don't want the iPhone ringing or buzzing. Calls and text still come through to your iPhone, unlike Airplane Mode, it just wont be announced to you or the world. Hence Do Not Disturb.
Hope that helps