how to block calls from "unknown" that does not show a number
how to block calls from "unknown" that does not show a number
iPhone 5c, iOS 10
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Follow the instructions in this Apple Support document: Detect and block spam phone calls - Apple Support
To turn on Silence Unknown Callers, go to Settings > Phone, then scroll down, tap Silence Unknown Callers, and turn on the feature.
Make sure to read the full article. There are some important things to consider and know about when using this feature.