Let's not talk too much just check below and see how it goes.
HOW TO GET YOUR MTN 4GB FOR N500 NAIRA
Simply get a new MTN SIM registered and you’ll be automatically eligible for double data offer for 4 months.
Dial *131*1*1*5# to get the data or dial *131# and You get extra 2GB and more 2GB making 4GB.
The Validity for this product is 2 days.
You are entitled to 4Gb if you are a new subscriber.