MTNNigeria

When you submits your NIN, the NIN must be verified before the line is active. This means that for lines that were barred from making calls, NIN submission alone will not...

You can link your NIN in one of the following ways for further validation with NIMC. 1.By dialing *785*Your NIN# free of charge and following the prompts. 2.You can also...

Link NIN on your line is the details are yet to be linked. ~Ighedoise

NIN STATUS CHECK: Dial *785#, follow the prompt to check the status of the NIN summited on your line, you can also check via myMTN app. You can also check your SIM-NIN status...

Another reason you might not be able to make calls could be if NIN is not sucessfully linked on a line. ~Ighedoise

However, airtime might be one of the reasons you are not able to make calls and send sms. ~Ighedoise

The application to check the details on your line is currently not responding on my system. We might not be able to check the details on your line at the moment. Kindly...

Kindly share with me the error message you received while attempting to make calls and send sms, the details of your account balance is also needed for further advice. ~Ighedoise