9mobile has started to offer a whooping offer to some of their customers in Nigeria. 9mobile whooping offer gives you 20 times X value of your recharge and also give you data.
9mobile has started to push the message and notifications to their eligible customers (both existing and new subscribers) to activate the whooping offer.
When you receive the notification message, if you recharge N100, you will get N500 airtime and 375MB data and the recharge of N200 will give you N1,000 airtime and 750MB data, and vice versa.
You can always check your data balance by dialling *228# and check your airtime balance by dialling *232# and enjoy!