I exchanged 2 phones(Samsung and Lenovo) and got Redmi note 10.
They accepted Samsung without any issues. Lenovo case on the back had a really minor cut. And the person who came for the exchange rejected it. I wouldn't call it out here if its was a major issue. It was a really minor crack on the back case.
They offered 2,000 rupees or so for the exchange. And still, they won't accept such a minor issue.
Pros: Person who came for the exchange was professional and took care of my Samsung exchange smoothly.
Make sure that your phone is 100% flawless. Even if there is a really minor issue, they will reject the product.
I ended up paying 2,000 rupees in place of exchanging my phone.