![Samsung Galaxy A21s](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-bb012320-6a9f-40ba-a3de-77ccaf7d7d42.png?width=150&height=320)
Samsung Galaxy A21s
Android 10.0
1. Find "Fixed dialling numbers"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b9c8b03a-d135-4442-a454-47ec9b04fe4b.png?width=200&height=448)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-877e2729-f2e5-41c1-a039-f24b42565629.png?width=200&height=448)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-1dc99451-7bd7-4bc6-bd20-c7e6da077893.png?width=200&height=448)
Press Supplementary services.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-1a58e4b1-bcb7-4239-a54b-41992209a2fb.png?width=200&height=448)
Press Fixed dialling numbers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9147ff09-6a7e-4385-81dd-83b6ccb881f3.png?width=200&height=448)
2. Turn on fixed dialling
Press Enable FDN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e0d47c3d-83ea-478c-861f-8906aae9dd45.png?width=200&height=448)
Key in your PIN2 and press OK. The default PIN2 is 1111.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c13a5d00-b08c-48c3-9875-af51ccd1676a.png?width=200&height=448)
1111
3. Turn off fixed dialling
Press Disable FDN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a984542c-5392-407f-a325-61021374a4e4.png?width=200&height=448)
Key in your PIN2 and press OK. The default PIN2 is 1111.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9c3342fb-649d-41d7-9fe3-a23ee87fda95.png?width=200&height=448)
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-e0d47c3d-83ea-478c-861f-8906aae9dd45.png?width=200&height=448)