Below was the statement from Airtel Nigeria;
The search is on! Get your Airtel SIM back on if you haven’t used it for 30 days or more to enjoy 20 times the value of your recharge. Recharge N100, Dial *241# and get N2,000.
As shown below;
So you can now recharge 100naira and get
N2,000 by dialing *241# and some comments makes me think it depends on eligibility.
So get yours now! while it still last.