OPPO A16s
![f-a39941f6-bfa0-4a1d-8e3b-cefa55d1c464](http://wmstatic.global.ssl.fastly.net/ml/020724-f-a39941f6-bfa0-4a1d-8e3b-cefa55d1c464.png?width=140&height=200)
![f-25311e34-f1c7-451a-8441-11acf6ed37b8](http://wmstatic.global.ssl.fastly.net/ml/020724-f-25311e34-f1c7-451a-8441-11acf6ed37b8.png?width=140&height=200)
![f-615829a9-3d9e-4ff3-a6f6-b18d87377a11](http://wmstatic.global.ssl.fastly.net/ml/020724-f-615829a9-3d9e-4ff3-a6f6-b18d87377a11.png?width=140&height=200)
![f-4d78f26f-75b6-435a-882b-e358dabb457a](http://wmstatic.global.ssl.fastly.net/ml/020724-f-4d78f26f-75b6-435a-882b-e358dabb457a.png?width=140&height=200)
![f-e123a593-b233-4c89-84df-166372b2d7ad](http://wmstatic.global.ssl.fastly.net/ml/020724-f-e123a593-b233-4c89-84df-166372b2d7ad.png?width=140&height=200)
![f-7e27ddcc-36c2-4400-89bd-4ca7f637b2c2](http://wmstatic.global.ssl.fastly.net/ml/020724-f-7e27ddcc-36c2-4400-89bd-4ca7f637b2c2.png?width=140&height=200)
It's not possible to make voice calls
Solution 1 of 11: Fixed dialling is turned on
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 phone icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ab5f158f-6e41-48ac-b3c9-a251a56b5287.png?width=224&height=500)
![Press the phone icon. Press the phone icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ab5f158f-6e41-48ac-b3c9-a251a56b5287.png?width=334&height=742)
Press the phone icon.
![Press the menu icon. Press the menu icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-604867bb-ce67-4d84-80ba-365cdeac1d9e.png?width=224&height=500)
![Press the menu icon. Press the menu icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-604867bb-ce67-4d84-80ba-365cdeac1d9e.png?width=334&height=742)
Press the menu icon.
![Press Settings. Press Settings.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-649fc10e-15c8-4a30-914a-1c4191f6e423.png?width=224&height=500)
![Press Settings. Press Settings.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-649fc10e-15c8-4a30-914a-1c4191f6e423.png?width=334&height=742)
Press Settings.
![Press Calling accounts. Press Calling accounts.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-f6534015-cf63-49ff-8660-37facf56788d.png?width=224&height=500)
![Press Calling accounts. Press Calling accounts.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-f6534015-cf63-49ff-8660-37facf56788d.png?width=334&height=742)
Press Calling accounts.
![Press Carrier call settings. Press Carrier call settings.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-b461471b-1152-4271-9d04-0b6a18374adb.png?width=224&height=500)
![Press Carrier call settings. Press Carrier call settings.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-b461471b-1152-4271-9d04-0b6a18374adb.png?width=334&height=742)
Press Carrier call settings.
![Press Fixed dialling numbers. Press Fixed dialling numbers.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-bb83881b-18c4-4b7d-b0e7-b4a1ed56aed4.png?width=224&height=500)
![Press Fixed dialling numbers. Press Fixed dialling numbers.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-bb83881b-18c4-4b7d-b0e7-b4a1ed56aed4.png?width=334&height=742)
Press Fixed dialling numbers.
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-9c65d627-9d7c-45d3-9088-5032baea389b.png?width=224&height=500)
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-9c65d627-9d7c-45d3-9088-5032baea389b.png?width=334&height=742)
Press the required SIM.
![Press Enable FDN. Press Enable FDN.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-d1e66ba8-be4b-4845-82a0-ec35b63bdb0e.png?width=224&height=500)
![Press Enable FDN. Press Enable FDN.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-d1e66ba8-be4b-4845-82a0-ec35b63bdb0e.png?width=334&height=742)
Press Enable FDN.
![Key in the PIN2 and press the confirm icon. The default PIN2 is 0000. Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-e76702b9-276d-49b2-8eb7-2d514cdc4914.png?width=224&height=500)
![Key in the PIN2 and press the confirm icon. The default PIN2 is 0000. Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-e76702b9-276d-49b2-8eb7-2d514cdc4914.png?width=334&height=742)
Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.
![Press Disable FDN. Press Disable FDN.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ee1da7b7-3aca-42b9-85c1-117c1c494016.png?width=224&height=500)
![Press Disable FDN. Press Disable FDN.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ee1da7b7-3aca-42b9-85c1-117c1c494016.png?width=334&height=742)
Press Disable FDN.
![Key in the PIN2 and press the confirm icon. The default PIN2 is 0000. Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-35a461d5-5455-45a4-95f4-1a5405c8d9a8.png?width=224&height=500)
![Key in the PIN2 and press the confirm icon. The default PIN2 is 0000. Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-35a461d5-5455-45a4-95f4-1a5405c8d9a8.png?width=334&height=742)
Key in the PIN2 and press the confirm icon. The default PIN2 is 0000.
![Press the Home key to return to the home screen. Press the Home key to return to the home screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-d1e66ba8-be4b-4845-82a0-ec35b63bdb0e.png?width=224&height=500)
![Press the Home key to return to the home screen. Press the Home key to return to the home screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-d1e66ba8-be4b-4845-82a0-ec35b63bdb0e.png?width=334&height=742)
Press the Home key to return to the home screen.