Sometimes I clearly see a new message WeChat notification, why not display it?

Combined with personal experience, talk about several reasons that may lead to this problem.

Article picture 1

First, WeChat notification

We should separate the mobile phone system from the WeChat APP. The mobile phone system has absolute control over the mobile phone. The software installed in the mobile phone must be authorized if it wants to use the system functions of the mobile phone. Take the notification authority of WeChat as an example. If the user does not authorize WeChat, the mobile phone cannot use the notification permission.

However, if the user has authorized the WeChat software through the mobile phone system and still can't pop up the notification message, then the problem may be the "WeChat notification function". The most common thing is that users have turned off the "new message notification" function of WeChat. As shown in the figure below:

Article picture 2

After the authorization of "WeChat notification" by mobile phone, the "new message notification" function of WeChat can be turned on to receive notifications normally.

Second, kill the application.

There was an "app killing" incident on the iPhone, and many iPhone users may not remember it. Say it briefly.

When users use iPhone to open some software, the software can run normally. However, if the user switches the mobile phone interface to other software or mobile phone functions, the previously opened software will be closed. When users want to use the previously opened software, they must restart it. Take WeChat as an example. As shown in the figure below:

Article picture 3

Let's assume that the user has turned off the "power-on auto-start, background auto-start" permission of WeChat. Even if the user allows WeChat to use the notification authority of the mobile phone, when WeChat turns on the "new message reminder" function, the notification of WeChat will not be displayed, because WeChat is "killed" by the background of the mobile phone system and cannot receive information. Therefore, in order to ensure that WeChat is in the state of "notification messages can pop up at any time", this option must be turned on.

In addition, some users will find that there is a "background APP refresh" option in the iPhone's mobile phone system. When this function is turned on, the mobile phone system will automatically detect the status of the APP running in the background. As shown in the figure below:

Article picture 4

Pay attention to the small print under the "background APP refresh" function. If the "background APP refresh" function is enabled, the mobile phone system may forcibly close WeChat in order to save power and increase the battery life of the mobile phone, resulting in WeChat not receiving notification messages.

Therefore, in order to ensure that WeChat can run normally in the background of the mobile phone without being "killed" by the system, it is necessary to authorize WeChat to "self-start" and turn off the "background APP refresh" function.

Third, the notification method.

If the user still does not receive the WeChat notification message after operating in the above way, there is another possibility. After the user authorizes WeChat "notification permission", it does not mean that the way of WeChat "displaying notifications" is correct. Whether it is Android system or IOS system, users will be provided with three ways according to the location where the notification is displayed. One is "corner notification", and the number of messages will be displayed in the upper right corner of the software icon; The other is "banner notice", and the message will be displayed at the top of the screen; The last one is "screen lock notification", which will