If I'm using iPhone SE new can I replace it with iPhone 12 mini by paying the difference amount at visiting apple store in India, as I'm an Indian resident.
This policy is familiar in U.S. , is the same policy available in Indian Apple store?
You'll have to inquire about this at your Apple Store or Apple Reseller in India. We are just users like you on this user to user only forum.
You can confirm by entering your apple store in internet, if you simulate you are buying it, at the end it should show the trade-in option.
Replacement
