In time, caller ID became ubiquitous, and so did the ability to block people you call from seeing your number. Here's how you can use the feature.

Learn how to block No Caller ID on your iPhone and avoid being disturbed by nuisance callers.

The simplest option on iPhone is to manually block individual numbers. However, spammers use a range of phone numbers, and ...

No Caller ID vs. Unknown Caller A call labeled " No Caller ID " means the caller has blocked their number from appearing on your screen. In other words, they want to keep their identity under wraps.