<![CDATA[SIM7020G]]>I am using arduino with M5STACK(https://shop.m5stack.com/collections/m5-module/products/com-nb-iot-modulesim7020g). I have trouble regarding checking the carrier.
when i check for AT i get reply ok but when i do AT+CCINFO i get reply error. does anyone what am i missing.
List of commands i tried and working.

AT
OK
AT+CSQ
+CSQ: 13,0

OK
AT+CMGF=1
OK
AT+CSCS=?
+CSCS: ("GSM","HEX","IRA","PCCP","PCDN","UCS2","8859-1")

OK
AT+CSCA?
+CSCA: "+4528132010",145

OK
AT+COPS=?
+COPS: (2,"TELIA MOBILE","TELIA","24001",9),,(0-4),(0-2)

OK

at+ccinfo
ERROR
can anyone guide me.

]]>https://community.m5stack.com/topic/3427/sim7020gRSS for NodeFri, 15 May 2026 09:04:04 GMTThu, 01 Jul 2021 14:15:13 GMT60<![CDATA[Reply to SIM7020G on Fri, 02 Jul 2021 08:42:56 GMT]]>Hello @anvup1

Searching through the SIM7020G AT command document the command AT+CCINFO is not listed. I don't think that command exists for SIM7020G.

For most commands you can check if they are supported by adding =?. E.g. AT+CCINFO=?. Does that actually return OK?

Thanks
Felix

]]>https://community.m5stack.com/post/14307https://community.m5stack.com/post/14307Fri, 02 Jul 2021 08:42:56 GMT