From what I have read the feature does not allow SMS messages from favorites to come through when Do Not Disturb is activated. In today's world of emergency notification and on-call work notification by SMS, the days of needing to make a call to notify someone of an emergency are long gone. Seems like an almost antiquated way of thinking by Apple. Adding the ability to allow SMS from Favorites would also allow you to put your phone in "vacation mode" and only allow messages from family/friends to come thru while work contacts were silenced and vice versa during the work day or during an important meeting. Since this isn't currently a feature, does anyone know if a fix is in the works?