Dear, I suggest you go to Xiaomi for after-sales inspection and maintenance. Xiaomi mobile phone provides after-sales service in strict accordance with the national three-guarantee law, and there is no reason to return it within 7 working days. 15 days replacement, 1 year warranty.
Xiaomi has the support of 18 Xiaomi Home and more than 420 authorized maintenance outlets nationwide.
Xiaomi home query path: /c/xiaomizhijia/
Inquiry path of authorized maintenance outlets: /c/service/poststation/
Please consult the official online customer service. /Services/Contacts
If you are using the computer now, please turn it on. (/c/service/? num=3)
If you have an APP of Xiaomi Mall on your mobile phone, please open Xiaomi Mall ~ Services ~ Drop-down ~ Online Customer Service.
Or call Xiaomi customer service directly at 400- 100-5678.
They can provide you with all kinds of information consultation.