I'm having difficulty finding an iPhone app to block "No Caller Id" but not unknown callers. So to be clear all calls with an actual number come thru as normal, but incoming calls without any number (such as private or *67 prefixed calls are blocked). This seems a rare use which is why it's difficult to get an answer. Any ideas? or suggestions for how to find this?
Thanks so much and in the interests of being concise let me politely share that if you are considering answering this question and your solution involves my contact list or somebody's blacklist then that would not be an answer to the question I asked.