Long gone are the days when you have to make calls at exuberant rates [charged by your network service providers]. The fact is that the antidote comes from the same group of individuals (that is, the service providers) that set the high cost in the first place; only that there are some customers who are either not aware of how to make cheap calls or have resigned to sticking with a plan that makes them
pay more.
Notwithstanding, for the sake of the former, I have decided to share with you the codes for unraveling the cheap call tariff plans.
How to make cheap calls on Airtel Nigeria
Just dial *318#. This enables you to migrate to Airtel Smart Premier
whereby you will be able to make calls at the rate of 11k/sec. The package
also comes with additional benefits. You can also dial *314# to migrate
to Airtel Smart VALUE bundle.
How to make cheap calls on MTN Nigeria
Dial *408# to migrate to MTN Xtra Special and you will be able to make calls at 15k/sec locally and 18k/sec internationally. Electively, you can dial *401# and select the benefit that catches your fancy from the available options.
How to make cheap calls on 9Mobile Nigeria
Dial *620*1# to migrate to the 9Mobile MoreFlex plan and make calls at 15k/sec or dial *320# to migrate to the MoreFlex evolution tariff.