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 What are the things to note on my first bill? How can I proceed to make payment? When will I receive my monthly bill from Grid Mobile? How do I change the email address to which I receive my bill? Does Grid Mobile support Roaming services? Comments 0 comments Please sign in to leave a comment.