In my previous post I wrote:
Here’s a way to make sure you only receive phone calls from people you want to hear from. Create a group in the Contacts app, for example, White List. Put everyone you don’t mind receiving phone calls from in this group.
Go to Settings -> Notifications -> Do Not Disturb and set Allow Calls From to this group. Optional: Toggle Repeated Calls off. Now go to Settings and turn Do Not Disturb on. Left in this configuration, only people you’ve added to the White List group will be able to ring through. Everyone else will be handed off to voice mail. You can add and remove people from the White List group as necessary. You’re welcome. This works, but only when your phone is locked. The description for Do Not Disturb reads:
When Do Not Disturb is enabled calls and alerts that arrive while locked will be silenced … (Emphasis added.) So If you’re using the phone, all calls will ring through. That limits the usefulness of Do Not Disturb somewhat. Playing a game? The call is coming through. Editing a document? The call is coming through. Checking your calendar while in a meeting? The call is coming through. Of course, this is the first appearance of Do Not Disturb. Future upgrades will likely introduce more functionality as more people get used to using it.