Hello, I tried all the examples of the MKRGSM library and I have the same problem each time. The modem does not respond correctly to AT + CPIN? I receive ERROR systematically after AT+CPIN? My SIM card does not have a PIN, so I used #define SECRET_PINNUMBER "". I also tried gsmAccess.begin(NULL)…

MKR1400 AT+CPIN? Problem

innometrix December 11, 2017, 7:55am 6

Here is the photo of the SIM inserted in the board.

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