I just came here about to post the same thing!
Individual blocking on a case by case basis is fine. But not powerful enough. I came from Nokia E series and the only thing I miss is Advanced Call Manager.
If you look up this program, what you will find is that it has some great features:
- You can set up many lists then just tell the phone to use the list for a whitelist or blacklist.
- You can block all unknown numbers.
- Block everyone. Essentially turns phone into pager.
Even blocking calls is done in a variety of ways.
- to voicemail
- to busy tone
- block and send sms
- divert to various numbers depending on mode
As you can see, it is a very powerful program that is set up very easily and I never had any complains, only praise. I often used it when I was writing when I would only want my partner and my mother to contact me and would block everyone else.
I have been looking but can't see anything as powerful or as highly rated. What I've found are:
Extreme Call Blocker
Phone Armor C.
But these seem either basic or don't work reliably.