Can I change my card details which I have previously input in my account? Admin June 26, 2019 08:33 Follow Definitely, you may login to your gridPortal account to change your card details. Related articles How can I proceed to make payment? What are the things to note on my first bill? What is my billing cycle? Do I need to change SIM card for number porting? Comments 0 comments Please sign in to leave a comment.