Reprogramming Phone Number under About Phone

[TimmyTwo2]

I have 2 Sprint Branded Samsung Galaxy S7 that I paid off and switched to FreedomPop (via GSM SIMs). When I go into Settings and look at the About Phone page for the phone number it says Unknown instead of a phone number. Anyone know if I can re-program them? If so, I am guessing there is a programming code to do so, I have my MSL numbers as well since they are paid off. I swear I did it via the #* secret codes before on my Samsung Galaxy S5.

 

[Rukbat]

Not a programming code, find a SIM editor in the lay store and edit the phone number on the card.

 

[TimmyTwo2]

The number is attached to the card fine, it isn't pulling the phone number from the sim into the about phone page on settings in Android.