You can now enjoy the new MTN unlimited data for free. By doing this trick you have to tweak your phone imei. And here is the new imei to use 861862009935658 after tweaking send Nokia to 131, and you will be given 325MB. You can use SMS bomber to luckily accumulate the Mbs (drop your comments if you want the Sms Bomber).
To check your balance Send 2 to 131.