When you dial the main subscription code of a bundle, the various subscription options of the bundle will be displayed on the screen of your phone.
For example, when you dial the daily bundle subscription code *157*1#
This is what will show up on your screen.
1) 100F=50 MB/24 H
2)250=150 MB/24 H
3) 500=350 MB/ 24 H .
Reply with your choice
For example to subscribe to the 100F 50 mb bundle, you just need to enter 1 and press the OK button on your phone.
After you have done that a message will pop up on the screen, notifying you that you have successfully subscribed for the selected MTN data bundle.
After you have successfully subscribed for a data bundle, you can always check the balance of your internet data volume by dialing *157*99#.