How to unlock Huawei p8 mobile phone information function when it is disabled?

Huawei's mobile phone information display has been disabled or the information is not the default application: the default SMS application is Android.

4.4 New features: When installing other third-party SMS applications (such as 360 Mobile Guard and Address Book), it is supported to set one SMS application as the default SMS application, and there can only be one SMS application in the system. When you set the third-party application as the default application, the native information will be displayed as "Disabled", and only the default SMS application can send SMS. When the send key is disabled, go to Settings-Application Management-Default Application Settings-Information, and set the SMS application as the default SMS application.