Avoid unwanted calls on iPhone
- Tap Favorites, Recents, or Voicemail. Tap. next to the number or contact you want to block, scroll down, then tap Block this Caller.
- Tap Contacts, tap the contact you want to block, scroll down, then tap Block this Caller.
What happens when you block a number on iPhone?
When you block a phone number or contact, they can still leave a voicemail, but you won't get a notification. Messages that are sent or received won't be delivered. Also, the contact won't get a notification that the call or message was blocked. ... You can also enable settings to block spam phone calls.
When you block someone do they know?
The person whose number you've blocked won't receive any sign that their message to you was blocked; their text will simply sit there looking as though it were sent and not yet delivered, but in fact, it will be lost to the ether.
