I’m trying to connect to the cellular network by inserting a sim card into my EC25-EU module and send SMS to another number. I’m using Putty to send AT commands.
However, sending SMS fails. Also some AT commands return ERROR. The module can’t connect to SIM’s operator. I tried with different SIM cards.
You can review my Putty interface in the screenshot below. Any assistance you can provide would be greatly appreciated.
I got CME ERROR: 3 and CME ERROR: 30 errors.