Log in QQ number on your mobile phone; Then in the "message" interface, click the QQ avatar in the upper left corner;
A new window will open on the left side of the interface and you will see the "Settings" option; Then click "Settings" to enter the interface.
Click "Message Notification" in the setting interface to enter the setting.
In message notification, first check whether "New Message Notification" is turned on. If it is turned on, there is no message reminder. It may also be that the mobile phone is connected to the wireless network and the screen of the mobile phone is locked, so sometimes there is no message reminder. This is a disadvantage of Apple's mobile phone.
If "New Message Notification" is not turned on, it needs to be set in the phone settings; Go back to the mobile phone desktop and click Settings to enter; Find "Notification Center" in the settings, click "QQ" in the notification center to enter, and set the way of information reminder in QQ. You can select a banner or a reminder at the same time. It is best to turn on the follow-up voice, so that there will be a voice reminder when the message is received; There is also a "lock screen display" at the bottom that can be turned on, so that a message reminder will be displayed when the screen is locked.