The standard USSD code to unblock (deactivate barring of) all outgoing calls is #331*call barring password#. Enter this code in your phone’s dialer and press the call button. The default password is often 0000 or 1234 unless you have changed it[7]. Some devices may also let you disable call barring in the call settings menu by entering the call barring password when prompted[6].
If your outgoing calls are blocked because your caller ID is hidden, you can unhide it by dialing #31# in your phone’s dialer, then making a call[2]. You may also need to adjust your device’s call or network settings to show your caller ID[4].
Note that the exact USSD codes or menu options may differ based on your carrier or country. If the above steps do not work, contact your mobile service provider for the correct procedure to unblock outgoing calls for your account[5].
References
- [2] How to Remove Private Number from Android and iPhone – CallHippo
- [4] Unblock my phone number (show outgoing caller ID again) – Public Mobile
- [5] Can I unblock my outgoing calls? – Cisco Community
- [6] Incoming and outgoing calls. Turn off call barring – Google Help
- [7] Common GSM Codes or USSD Codes and Their Use – My online Text
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