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.