How to set up instant messaging?

Find the icon of the setting on our mobile phone screen. Click Open.

After opening the setting interface, we slide the screen up. Find options for the following information,

After opening it, we found the instant message, and we closed the back.

Then click Notification Management at the top. We open it.

Here, we find that the content of the notice is hidden when it is not unlocked, so we open it.

After all the above settings are completed. When the message comes again, the mobile phone will not display the content of the message on the screen without unlocking it.