Mtn zone new offer! Try to have up to 50naira on your phone then dial *567*7# to get #4,000 that will expire @11:59pm



This might also excite you;

Dial *567*3# for #30
Dial *567*1# for #10
Dial *567*2# for #20

#30 Will be deducted from your account and you will be given #4800 worth of Airtime.
Make sure you are on MTN iPulse or True Talk.
Use *406# to migrate
It last for just a Day. You should finish the Airtime on/before 11:59pm. If you are ELIGIBLE.
Yes. If you are eligible. You will receive it
instantly.

If you not eligible keep trying..

More (source) : http://nanagist.com/2015/08/get-unlimited-free-credits-on-your-mtn-sims-to-call-all-networks/

Ok