This days there are alot of competition between the network providers, Everyone wants to provide their customers with the cheapest data plans and Airtel has done it again.This is new and it has not been officially announced yet as far as we know, The new plan gives customer's 250mb for 50naira, 75mb for 20naira, 1.5gb for 300naira.
To activate dial *141*242#
Note: it doesn't work on all Airtel SIM cards.