The Bluevia SIM has Internet data communications and SMS with other Bluevia SIMs but no SMS with other networks (we are working to get it but we're not yet there, SMS offers are complex to design due to roaming etc...)
The typical IoT development is not based in SMS but communicating the devices through through an Internet server. For example you can use MQTT, a googleapp engine service or, even simpler, a Twitter messages.