It's kinda disturbing when people keep calling me during work or meetings, but to me it's okay if I receive short messages or Whatsapp message because I can reply them few minutes later in a short break. I'm new Android user and wonder if my phone could do that for me.
You can use the tried and tested
There, all incoming calls will be blocked. You may still be able to place calls unless you barred that too.
This feature is carrier network dependent and it already exists in the dumbphone era. Still useful though.
I also found Call Guard in the Play Store. Maybe you take a look at it.
(At least in some phones, for example LG G3) there's an option for this:
protected by Community♦ Apr 1 at 9:49
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site.
Would you like to answer one of these unanswered questions instead?