Why does the mobile phone keep ringing the SMS prompt?

The reason why the mobile phone keeps ringing the SMS prompt is because the user has opened the data connection or wireless network.

When installing the software, the smart phone will remind the user whether to receive the message pushed by the software to the user. If the user chooses to accept, as long as there is a network, the software will push messages to the user's mobile phone from time to time, and then the mobile phone will send out a sound similar to a short message prompt.

The so-called information push is "web broadcasting", which is a new technology that regularly transmits the information needed by users on the Internet through certain technical standards or protocols to reduce information overload. Push technology reduces the time of searching on the network by automatically transmitting information to users. It searches and filters information according to users' interests, and pushes it to users on a regular basis to help users efficiently explore valuable information.