If the Phone app’s menu does not show the call barring option or the settings appear grayed out, your next stop is the main Android app. This is particularly common on devices running stock Android or those with heavy custom skins like One UI (Samsung) or MIUI (Xiaomi). Navigate to Settings > Network & internet (or “Connections”) > SIMs (or “Mobile network”). Select your active SIM card. Look for an option called Call barring or Additional settings . The interface may differ, but the function remains identical: you will see the same list of call types with toggles. Disable each as needed, using the network password when prompted. This method is often more reliable than the Phone app because it directly interfaces with the modem firmware.

. How it works: Instead of manual toggling, users can set automated rules to bar international or incoming calls during specific calendar events or time blocks. Contextual Awareness: The feature could automatically enable "Bar All Incoming" when it detects you are in a roaming zone or if your "Sleep Mode" is active, ensuring you aren't charged for unwanted incoming calls or disturbed during off-hours. Would you like help finding the specific