SMS Modem GSM Modem

SMS cats are devices used to send and receive text messages. They are the same as mobile phones.
Insert the SIM card and connect it to the computer through the (USB or serial port) data cable/PCI slot
You can use related software on your computer to send and receive text messages.

Related software is the text message application that sends and receives text messages.
You can develop your own device, or ask the device manufacturer of SMS to provide

The principle and fee of sending and receiving text messages by SMS cats are the same as those of mobile phones (it is said that there are also cheap group card issuers, with an average of more than 1 cent per article)
The difference is that SMS cats focus on text message sending and receiving applications, so the speed is faster.
A statistic is: SMS cat 700/hour, mobile phone 500/hour
Compared with other advantages of mobile phones, it features high reliability, no battery, no Internet, and can be sent at any time.

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