How Do You Block Someones Number Without Them Knowing?

Silent Ringtone

When you have synced the ringtone to your iPhone, you can assign the ringtone to a contact by opening Contacts, tapping the contact you want to block, tapping "Edit" and then tapping "ringtone." Because the phone continues to ring, the caller will not know you have "blocked" them.

Can you block someone's number without them knowing?

You can block a specific number on your Android phone using the Phone or Messages app. You can also block unknown numbers if you're tired of receiving spam calls from bots and telemarketers. When you block someone, they won't get a notification or know for sure that you've blocked them.

When you block a caller do they know?

Blocked phone calls go straight to voicemail

This is their only clue that you blocked them. The blocked caller can still leave a voicemail, but it won't show up with your regular messages.