It is NOT possible. I recently closed my FD one card and asked cc. This is the reply -
Greetings from OneCard!
As per your query, we do not have any provision that any user can sign up to unsecured card once user has closed secured card.
After few months is there will be any such offer we will notify you.
Thanks for contacting us!
Regards,
Shubhada
Customer Experience Team
Team OneCard.
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Greetings from OneCard!
Currently we do not have option to upgrade account from secured to unsecured or vice versa as there is no manual intervention in the application process.
Incase if we have any offers without FD, we will let you know in the app.
We appreciate your patience and understanding.
Thanks & Regards
Somnath
CX Specialist
Team OneCard