A: Join MTN ZONE tariff plan by dialing *135*1# and mtn will send
you a message "WELCOME TO MTN ZONE"
B: Then join mtn 5*bonus by dialing *507# .
Make sure that you have atleast five naira ( N5.00 ) on your
number, then call any MTN number between 1:30 am to 6:30 am
and and MTN will give you N500 bonus to make calls to mtn
numbers through out the day which will expire at 12 midnight.