Unknown caller
Hi! Can you block an unknown caller and in that case, how?
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You can block all callers whose numbers are not in your contacts, but not specifically callers that display “unknown caller”. Go to Settings/Phone and turn on Silence Unknown Callers.
Ask your carrier; some may offer a way to block unknown callers. However, most phone spammers don’t block their caller ID; instead they send a random legitimate caller ID. Unknown Callers are frequently legitimate callers who don’t want to reveal their personal numbers, such as doctors, so perhaps you shouldn’t block them.