The method varies slightly depending on your device and carrier, but the steps below cover the most common ways. This works on most modern Android and iPhone devices.
Call barring is a network feature that lets you block specific types of calls (e.g., all outgoing calls, international calls, or incoming calls when roaming). While useful, you may need to disable it to receive or make calls again. how to turn off call barring
If you intended to disable barring for a specific reason (e.g., traveling abroad), remember you can re-enable it anytime using the same steps. The method varies slightly depending on your device