The steps to turn off call barring vary depending on your phone's operating system and service provider. Here are the general steps for Android and iOS devices:
Some carriers hide this menu unless you have a special code. Try #333# to turn off all barring (then press call). turn off call barring
Call barring is a useful feature that blocks certain types of calls (incoming, outgoing, international, etc.). But if you’re no longer traveling, have settled a billing issue, or simply want full access again, turning it off is easy. The steps to turn off call barring vary