Is the untitled SMS that cannot be deleted a virus?

It could be a virus. In this case, you can use a computer to brush the machine.

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Short message is a telecommunication service in digital mobile communication system. It is a non-real-time and non-voice data communication service to transmit text or digital short messages through the signaling channel and signaling network of mobile communication system.

SMS can be initiated by mobile communication terminals (mobile phones), SMS platform servers of mobile network operators, and network service providers (including ICP and ISP). ) interconnected with the SMS platform of mobile operators.

Although sending and receiving point-to-point messages through mobile terminals occupy the mainstream position in the technical means to realize the short message service function, fixed telephones, PHS and the Internet are becoming new tools and carriers.

At the beginning of the development of short message service, the sending and receiving of short messages started from mobile phones, and finally went to mobile phones, passing through GSM network /CDMA network, short message center and other network elements; With the emergence of short message on demand and customized services, mobile phones, internet sites and short message value-added service systems can send short messages to each other.

Internet site and SMS value-added service system have become new network elements, while GSM/CDMA network and SMS center still maintain the core position of SMS network; With the emergence of PHS mobile phone based on fixed telephone network in China.

Short message service is extended to fixed network, and terminals are no longer limited to mobile phones. PHS mobile phones or special fixed terminals can be used as senders and receivers of short messages, and the network foundation is no longer limited to digital mobile networks such as GSM/CDMA networks. Fixed network can also become the network foundation of short message, and the elements of short message network have changed significantly.

Baidu Encyclopedia-SMS