When you enter the Call Barring menu, you might see confusing labels. Here is what they mean:
Call barring is a useful feature that allows you to prevent incoming or outgoing calls on your Android device. It is often used to avoid roaming charges, prevent accidental dialing, or maintain privacy. However, if you are unable to make or receive calls, call barring may have been activated accidentally or by your network provider.
Before you begin, keep in mind that to be turned on or off.