Hello, I asked my sister to take an oppo from his friend the other day. She said she had to open it and take a warranty card to the manufacturer. Do you have two warranty cards?

This is normal. There are two warranty cards in OPPO's mobile phone, one is the salesperson's own, because both of them are paid with warranty cards. The other one is for customers. Because there is something wrong with the mobile phone, you can take this warranty card for after-sales warranty. There are two insurance cards in the box, one is a customer coupon and the other is a sales coupon. If you go to the store to buy a mobile phone, you can also see that the salesperson will tear it up. )