As far as this period matters GTB is topping with their gifts and promo, Guarantee Trust Bank are giving out N737 worth of Airtime when you recharge your Sim card using the GTbank USSD code *737#.
From a tweet on GTbank official tweeter page, it says
Give airtime to your loved ones in the 12 days of 737 Promo!!! Get back N737 when you recharge N737 airtime for your friends and family.
Now from the tweet if you recharge any line with your GTbank registered phone number, you will get extra N737 worth of airtime and this airtime can be used to make calls and browse.
How Do I Recharge With The GTbank USD Code
All you need to do is, juts dial *737# then follow as directed on your screen then after carefully following the prompt and successfully recharging the desired line, your free airtime will be send to your main line.
Is it helpful? Do you have any question? Comment and Share.
how long can the free MTN N737 last
GTbank has stopped the offer but you can still browse on MTN for free. See how to get it HERE