Why is My Phone number missing in Settings on my upgraded lumia mobile

[Windows Central Question]

I have upgraded my mobile to a Lumia 650 but My Phone number is not showing in Settings. How can I make this happen as one of my apps needs the detail.
Bob

 

[libra89]

I have upgraded my mobile to a Lumia 650 but My Phone number is not showing in Settings. How can I make this happen as one of my apps needs the detail.
Bob

Make sure that your SIM is inserted correctly. Before checking that, try a soft reset by holding down volume down and power buttons at the same time until the phone turns off and then back on.