Is there a way how I can determine what the voltage for a SIM card should be? Is there a command or can the SIM toolkit be used to determine whether the SIM card (connected the a Wavecom module) is 1.8, 3, or 5V card?
What is the minimum Version of core software to support 1.8V SIM cards? In the x50a AT Commands Interface Guide “SIM1V8ONLY” and “SIM1V8AND3V” are listed with FtrIDs for command AT+WFM, but when I do AT+WFM=2 on 640d09gg.Q2406B, I only get
... +WFM: "SIM3VONLY",0,0 +WFM: "SIM5VONLY",0,0 +WFM: "SIM3AND5V",1,0 ...
So I guess OpenAT 2.0 with the required core software is too old to support 1.8V cards, right?
What would a module do with SIM3AND5V enabled and an 1.8V card inserted? Is there any indication, would it reject the card, or could it be that the behaviour is not really predictable?
That brings me back to my first question… How do I know what kind of SIM it is???
Thanks in advance for any insights on that matter,