Do you know that you can get 500naira for 3gb on mtn? Yes! You can. Follow this tutorial below.
Find an mtn sim and tweak this imei
Then after tweaking, you will receive a message from mtn about your successful welcome to mtn family for 6months then kindly migrate to mtn ipulse by dialling *406*1# and then go load 500naira card and dial *131# and a buy a data plan from Mtn Weekly, monthly, daily plans and immediately your data will be doubled.
I loaded 500naira and I bought 750mb weekly plan from Mtn and it was doubled to 3gb. As shown below;
So start blazing.