Hello, you don't need to cancel if you don't open the card. Because you didn't open the card, the bank didn't know, so make sure you received it. Keep this card. Don't lose it. One day you need to use the card again, just open it directly, hehe, sometimes the bank customer service will call you, and there will be gifts when you open the card.

Bottom line: if you don't open it, you don't need to apply for a small card, and the bank won't charge you any fees, such as annual fees.