![Samsung Galaxy S21 Ultra 5G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ee679143-c863-46d6-9a64-f2457162c911.png?width=150&height=320)
Samsung Galaxy S21 Ultra 5G
Android 11.0
1. Find "Fixed dialling numbers"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b046ae34-0c83-43a5-a7fe-d4a9539ce1cc.png?width=210&height=466)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-09a6cba0-68fb-4dbf-952a-b8f19bf9cd1a.png?width=210&height=466)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e14dd5a6-0ce0-4ae6-9a75-e8f7dce17e1d.png?width=210&height=466)
Press Supplementary services.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b52319fe-65fd-4abf-8501-8828291a0b51.png?width=210&height=466)
Press Fixed dialling numbers below the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-0c18e6a4-8314-4d96-aabf-d8fc5f33595e.png?width=210&height=466)
2. Turn on fixed dialling
Press Enable FDN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ae3107e7-be22-40eb-b76d-21bc95517465.png?width=210&height=466)
Key in your PIN2 and press OK. The default PIN2 is 1111.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e1ffcd41-b1eb-42a0-9227-a64c9be0cf48.png?width=210&height=466)
1111
3. Turn off fixed dialling
Press Disable FDN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-45be6d18-ea7b-4df7-940a-ced0888059fa.png?width=210&height=466)
Key in your PIN2 and press OK. The default PIN2 is 1111.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-381e4f56-ba43-4b07-8508-cc01497d13c5.png?width=210&height=466)
1111
4. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ae3107e7-be22-40eb-b76d-21bc95517465.png?width=210&height=466)