![]() It depends a bit on your requirements - if it's just a demo, how many SMSs you want to send etc. And of course you'd be limited to the number of SMSs that you could send via one SIM. That may not be terribly reliable though - it depends a bit on how the SIM is set up. ![]() 3GPP TS 27.007 section 7.3 AT+COPS), and choose the network that you want for the SMS. ![]() In this case, you would have to find all the available networks via AT commands (e.g. But you generally get more choice when you're roaming. Operators don't usually allow you to select another operator when you're using a SIM in its home country - you have to stay on the home network. Use a roaming SIM, that is to say a SIM from another country. Look for multiple commercial SMS gateways that each send SMSs to a different operator (Note that using a commercial SMS gateway is the only realistic option if you're planning to send large numbers of SMSs). ![]() Look for a commercial SMS gateway that can send to different operators - I don't know if any of them offer that service. Have multiple GSM devices, each with its own SIM slot containing a SIM from a different operator (this is probably your best option if you're not planning to send a lot of SMSs). If want to simulate the componnet I am afraid you won't be able to do it because microcontrollers complex and it's is. This is not a technical thing, it depends upon agreements between operators. If you need the component for a schematic drawing, you can create your own component and if you don't know how to do this, please refer to the Component Creation tutorial. Look for a single SIM that supports multiple operators - not available as far as I know. ![]()
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