Customers will be charged just 49 yuan (US$7) for the service, with free delivery and fitting included. The applicable smartphones are:

Xiaomi Mi 5, Mi 5S
Xiaomi Mi 6, Mi 6X
Xiaomi Mi 8, Mi 8 SE, Mi 8 Youth Edition, Mi 8 Screen Fingerprint Edition, Mi 8 Explorer Edition
Xiaomi Mi 9, Mi 9 SE, Mi 9 Pro, Mi 9 Explorer Edition
Xiaomi Mi Max 2
Xiaomi Mi Mix 2, Xiaomi Mi Mix 2S
Redmi Note 5
Redmi 6, Redmi 6A
Redmi Note 7, Redmi Note 7 Pro