Here is how to check account balance on Mtn Nigeria.
Are you new MTN user who want to know how to check your Mtn account balance ? Well, checking your airtime is very simple for everyone to do but at the same time, if you do not know the code, then checking your Mtn account balance will WAEC questions for you. Now to check your airtime balance dial *556#
Note: You must do this only with your Mtn sim or line.