On an iPhone, how do I block a caller that has no caller ID or phone#?

On an iPhone, how do I block a caller that has no caller ID or phone#?

You should be able to create a contact named UNKNOWN and another as PRIVATE
Give them both silent ring tones and add them to your blocked callers list.

This is what I have done in the past with my phones, Blackberry, Android and Nokia.

  • When you Block Caller on iPhone, does it completely block them or do they show up as Unknown? I routinely "Block Caller" telemarketers, so does using the iPhone "Block Caller" option block all calls, or will the calls still come through and just show up as "Unknown"? I've received a lot of "Unknown" phone calls lately, so that's what I was attributing it to.
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