Prerequisite : You must have done one time registration in the BSNL Self Care Portal Click Here to Register Now
1. Log into Self Care Portal
2. Click on the account number.
3. See the Menu in left side of the page. Click 'Modify Services -> Upgrade Your Plan' , Check the Terms & Conditions, Proceed to Next.
4. Complete all the steps.
Please check the Most Popular Plans Here before you select the plan.
You may feel that - It is better to send a mail or give a letter to your BSNL Custemer Center for a plan change. That is fine.