Apple's mobile phone has set the screen time, why can't I see the received information?

How to deal with the failure to receive notification tips/contents after the phone is locked, refer to the following:

When the screen is locked, the terminal will automatically disconnect the mobile data /WLAN network connection. WLAN Settings: Go to Settings-WLAN-Advanced Settings-Keep the WLAN connection switch on when sleeping. Mobile data: Go to Settings-Mobile Network-Always connect the data switch. You can hear the notification sound when locking the screen, but you can't see the notification content when locking the screen, but you can see it after unlocking it. By setting the notification management function of menu or housekeeper class, you can set the notification authority of screen lock for a specific application. Spam messages are intercepted by security software. You can access the security software to view the blocked spam messages. Information is classified as spam messages, and some mobile phones have the function of garbage bins, which can be queried inside.

Other SMS messages are set to be received and stored in the SIM card. Try to clear the SMS in the SIM card first. IMessage is an instant messaging software launched by Apple, which can send short messages, videos and so on. It has high security. According to the investigation of China Youth Daily and Zhongqing Online reporter, although iMessage has built a security barrier for communication content, it is unable to resist the surging impact of spam, and the underground advertising business based on iMessage has developed into an industrial chain.