The mobile phone received three text messages.

First of all, SMS permission is limited.

Generally speaking, SMS is the software that comes with the mobile phone system. Take Android as an example. Most domestic manufacturers did not use Android directly, but made a new version based on Android in magic change. This version will protect the software of some systems, and users cannot install or uninstall it.

But after all, SMS is also a kind of software. If we manually turn off the corresponding permissions, it will not be displayed normally. Although the mobile phone will receive a text message, there will be no prompt. If we turn on the permission to allow notification, the mobile phone will be notified when it receives the SMS. If the priority display is set to on, the SMS notification will be placed above other messages, ranking first. In addition to these functions, most mobile phones also have the privacy protection function of SMS notification. When turned on, the notification will only display the notification in the unlocked state, but will not display the short message content, and will not be displayed normally until the mobile phone is unlocked.

Second, the blacklist

In addition, some mobile phones have the function of "blacklist" or "rejecting calls or text messages from strangers". If the user sets this function himself, some short messages will be automatically intercepted. However, some mobile phones can set the priority of SMS notification. If it is set to General, when multiple SMS messages are received at the same time, the notification may not be displayed.

Third, third-party software interception.

In addition to the limitation of system authority and the function of SMS itself, there is also a situation that it is limited by third-party software. Third-party software, such as 360 security guards, mobile phone version of computer housekeeper, etc., all have functions similar to SMS interception. This interception function is only a connection, but it will not be deleted.

Some powerful interception software will even help users display all kinds of short messages in different categories. When we receive text messages, our mobile phones will not display them. Most likely, the intelligent identification function of third-party software will treat it as unimportant short messages or spam messages, thus directly preventing notifications.

The solution is also simple. Turn off the permissions of this kind of software, or simply uninstall this kind of software. However, some software comes with the mobile phone system. Unless it is root, it cannot be uninstalled actively. You can only find the relevant settings and turn it off.