Mtn Free Call Code with 0.00 naira to All Mtn Numbers

Make free midnight calls with 0.00 naira or when
your account balance's not upto 100naira.

To start making calls at 0.00naira

simply dial...
*460*3#  and you are there.
When its 12am, wake up and start making calls with 0.00naira

NB: this tweak is only for Mtn to Mtn calls. And it has been tested and comfirmed.