MTN transfer PIN is needed to wrap up an airtime transfer. It is a 4 digit code that you need to send credit to anyone who is also on the MTN network.
Simply text “Default PIN” “New PIN” “New PIN” to 556. For instance, if you wish to change the Default PIN to 1111 as your new PIN text “0000 1111 1111” to 777.
Or you can change/activate your new transfer PIN code by dialing 600Default PINNew PIN and send this message. For instance, dial 600000012341234# and send.