MTN has recently changed its procedures and USSD Code for Transferring airtime or changing your share and sell pin. If you have been trying to transfer airtime or change your PIN using the old code, its quite unfortunate that it didnt work. See the new USSD code below.
This Was The Old USSD Code and Process To Transfer and change your "share and sell" pin:
To change your PIN this code was used before:
*601*DEFAULT PIN or OLD PIN*NEW PIN*NEW PIN#
While to transfer airtime this code was used:
*600*RECIPIENT NUMBER*AMOUNT*PIN#.
MTN Has Changed The Code Above To:
To change your pin:
*600*DEFAULT PIN*NEW PIN*NEW PIN#
While to transfer airtime:
*600*Recipient's Number*Amount*PIN#To Transfer Airtime View SMS or Message:
Send an SMS to 777 With the format below:
Transfer "Recipient Number"Amount PIN