If you are planning of converting your credit to internet bundle on your vodafone sim card, then you can select your desired plan from a list of several plans
Steps
Dial *151# and select option 6 (data ), from the list that will appear, select option 1( internet /GPRS ) then a list of data plan will be displayed to you. Select the plan you want by replying with the number corresponding with your desired choice.
Or you can choose option 7 for more offers
You can access this by simply dialing a shortcode *151*6*1#
Thanks for reading.