You can upgrade to a new credit card only if you are eligible for it.
If you are eligible for the Card Upgrade offer, after logging in you will see a ‘Card Upgrade’ option under ‘Benefits’ section.
You will be shown recommended card which you can upgrade to. You will also be displayed the card details: features, benefits, fees, charges etc.
Follow the steps given in the Card Upgrade journey and submit the request to upgrade to a new card.