This will enable you to share MB, from 1 MTN sim to another.
But you have to register the sim... first!
FOLLOW THE STEPS:
1. Dial *131*2# - immediately you dial that code, you are automatically registered.
2. Then, you can follow the steps and options to add your beneficiary number
3. Change you pin from default - 0000 to the pin of your choice (inorder to enable you to transfer)
NOTE: The Minimum amount of MB, you can transfer is 250 Mega byte.
Try it and drop your comment!!!