Q: Blocking Unknown Callers

Not on the phone, no. Contact your carrier and see if they offer that service.

Just go on www.trapcall.com there you'll can block anything you want paying 7,99mo I've been using for 5mo life is been great ever since.

Good luck!!!

FWIW  i've solved this on my iPhone 5s   settings:

Do not disturb is set to "manual" and on

Allow calls from is "all contacts"

silence is set to "always"

Now when I call my mob from my landline it rings. When I use 141 ( blocks outgoing caller ID in UK)  and call my mobile from my landline it won't connect

Perfect. no mystery app. No monthly fee's No telemarketers nor PPI mis selling able to call!!

Can everyone in this forum and similar forums, PLEASE send feedback to Apple.  They aren't reading these forums but they do get the feedback (which, BTW, is different than support).

http://www.apple.com/feedback

I already did send a note to 'feedback'.

Feedback about what? The do not disturb block calls. simple

I'm worried that other legit callers not in my contacts won't go through and I may miss those callers that aren't in my contacts. A big price to pay just to screen out Unknown. Throwing the baby out with the bathwater approach there.