What's the difference between an SMS command and just sending data? It says they charge 10 cents for a Mb but 5 cents for a data command. Can I just send a command that is less than a Mb and save money?
For example, if each time your device checks in you exchange 50 KB of data, you could do that 20 times for $0.10. You can only communicate with your device twice using SMS Commands at $0.05 per SMS Command. SMS Commands are often used as a way of configuring some IoT hardware solutions where you can set configuration values over SMS or to communicate with your device if it seems like something is going wrong with its data connection. It's an extra way of interacting with your device that may be deployed into the field thousands of mile away from you."