OnePlus 7 Pro 5G
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Turning fixed dialling on or off
When fixed dialling is turned on, you can only call selected numbers and do emergency calls. Incoming calls aren't affected.
Press the phone icon.
Press the menu icon.
Press Settings.
Press Call settings.
Press the name of the SIM.
Press Fixed dialling numbers.
Press Enable FDN.
Key in your PIN2 and press OK. The default PIN2 is 0000.
Press Disable FDN.
Key in your PIN2 and press OK. The default PIN2 is 0000.
Press the Home key to return to the home screen.