Iphone lock screen does not display information content.

Open Settings → Notifications → Display Preview in your mobile phone. At this time, there are three choices. We choose the option when unlocking. In this way, when the iPhone locks the screen, the specific content of the notification will only be displayed after you put your finger on the Home button to recognize it successfully (iPhone X is after the face recognition is successful). The contents of this message will not be seen by others until it is unlocked. Of course, you can also set a software to display content only when it is unlocked. Select a software in Settings-Notification, slide your finger to the bottom, select Show Preview, and then select Unlock. ▽ Contrast before and after setting ▽ Have you learned this elegant posture? If it helps you, please pay attention to forwarding it so that more friends can see it. "