Free! Get Airtel 2.25GB For N500 Only

How To Get Airtel 2.25GB For Just 500 Naira, its almost freeI dont think there is a better package than this on Airtel. 2.25gb for just #500? I am not AIRTEL fan but this one worth trying, just load 500# and dial *390*2*1#. 1.5gb+750mb we aren't sure of this for old customers, It works on new sims only!