Why not remind Xiaomi of unimportant news?

System setup problem, software update problem, notification setup problem.

1. System setup problem: The user has not turned on the free SMS function in the settings of the mobile phone, so the function cannot be used.

2. Software update problem: Xiaomi's mobile phone system or application has not been updated to the latest version, so it is impossible to open the free SMS function.

3. Notification setting problem: The notification setting of mobile phone is turned off.