MTN Magic Number allows you register one MTN number as your Magic Number. You can then make FREE calls to your Magic Number all day, every day for 30 days. Your Magic Number can also make FREE
calls to you all day, every day for 30 days.
* With MTN Magic Number, you will be able to register that special person you always want to speak with and enjoy uninterrupted FREE calls at any time of the day for one month.
* Also, the person you register will also enjoy the same uninterrupted FREE calls anytime she/he calls your number during the one month validity period.
* So If you have that special person (Friend, family member, Boss at work etc) you would like to talk to for FREE at any point in time, then My Magic Number is for you!
Get more info here
SOURCE: MTN ONLINE NIGERIA