Please refer to the following two points:
Answer: Please go to Xiaomi's authorized repair point or Xiaomi's home near you for testing.
Address and telephone enquiry: /c/service/poststation/ Xiaomi House works from Tuesday to Sunday, 10 from morning to 6 pm.
B. If there is no outlet near you, if you bought it in Xiaomi official website, please go to Xiaomi official website, log in to the account where you bought the product, select Apply for after-sales in the order details, and then please keep your mobile phone open. The staff will contact you. Or you can call Xiaomi customer service directly. If you didn't buy it in Xiaomi official website, you can call Xiaomi for customer service consultation.