mtn is giving out 500mb for 7days trial for free.
HOW TO GET FREE 500MB
STEP 1: go to www.mobiletv.mtnonline.com with your web browser
STEP 2: once it open close it back you will have been credited with 500mb
STEP 3: check your mb with *559# you will see 500mb
NOTE : this mb only work for Mobiletv only.
what did you think about this use the comment box.
And that's your free 500MB trick for your MTN sim.