Why is the voice of Meizu note5 SMS gone?

In this case, the notification tone is usually turned off. Solution: Settings-Sound and Vibration-Notification.

Detailed operation method:

First, open the phone desktop, find "Settings" and click Enter.

After entering, scroll down to find "Sound and Vibration" and click Enter.

Drag the blue bars under Ringtones and Notifications to the maximum.