How to modify the received SMS?

You can get the content and sender of the message through the received message, or intercept the message, but you can't modify the content of the received message.

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. In the technical means to realize the function of short message service, sending and receiving point-to-point messages through mobile terminals occupies the mainstream position, but it is not the only form. Fixed telephone, PHS and Internet are becoming new tools and carriers.

With the extension of short messages from mobile phones to PHS and fixed terminals, and from digital mobile communication network to fixed telephone network, people's understanding of short messages is no longer just regarded as the "patent" of digital mobile phones. Business forms are changing, network elements are changing, and information content is rich. In this process, only two things remain unchanged:

The length of the message. It is always less than 160 English or numeric characters or 70 Chinese characters, which is closely related to the short message transmission mechanism based on the signaling network of communication system.

This is a way to send text messages. Store and forward, when the user does not receive it, the message will not be lost, but will be temporarily stored in the message center. When the user logs on to the network again, the short message will be quickly submitted to the user's mobile phone.