How to block your cell phone number
You can also add phone numbers or email addresses directly to your Blocked Contacts list in the Settings app.
Add the phone numbers or email addresses you want to block to your Contacts.
For phone numbers, go to Settings > Phone > Blocked Contacts > Add New. For email addresses, go to Settings > Mail > Block List > Add.
Select the contact you want to block.
When you block a phone number or contact, they can still leave voice messages, but you won't receive notifications. Messages sent or received will not be delivered. Also, this contact will not be notified that calls or messages have been blocked. After you block an email address in Mail, the email address will be moved to the Trash folder. Email blocking works on all your Apple devices.
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