Block all incoming or outgoing calls
When you block calls, you can stop all incoming or outgoing calls, and prevent all incoming or all outgoing calls when
roaming. Contact your service provider for more info on blocking specific phone numbers. Depending on your service
provider, this feature might not be supported.
In the Phone app, in the upper-right corner of the screen, tap .
Tap Settings > Calls > Call blocking.
Select any of the checkboxes.
The first time that you turn on call blocking, you are prompted to create a password to lock your call blocking settings. To
change your call blocking password, tap Change call blocking password.