@PepsonPeter@veynkouki@_FarouqOlami I had this same issue today.
Just switch your network mode to 3G, try the USSD Code, then you can switch back to 4G/5G.
@MTN180@MTNNG Hello Mtn, what exactly is going on with your network? I can't dial USSD Codes, I can't call, I can't recharge my line or buy data using the USSD Codes. What's the problem?
๐ถ My spirit magnifies the Lordโ
And my soul praises his name!
For death could not hold him captive.
Even in the grave, he is Lord.
Even in the grave, he is Lord. ๐ถ