I am playing with the waveshare pico-sim-7080g header card. I am in the UK and I can get an O2 4g sim card to work but any other sim cards I try just dont work.
for those who use the card I have included some AT command results:
Signal strength is adequate as AT+CSQ returns 31,99 which as I understand it is not a bad signal
AT+CNACT? returns
+CNACT: 0,0,"0.0.0.0"
+CNACT: 1,0,"0.0.0.0"
+CNACT: 2,0,"0.0.0.0"
+CNACT: 3,0,"0.0.0.0"
which I think means no network
AT+COPS? returns +COPS: 0
When I boot I use AT+CNMP=51 to use both GSM and LTE
Also I also issue AT+CNMB=3 to enable both CAT-M and NB-IoT
when I issue AT+CGNAPN to get the apn list I get +CGNAPN: 0,""
I am stuck at this point as I have tried 4 sim cards and only 1, an o2 on works. SMARTY, Lebara, ThingsMobile all dont connect. I am sure it is me being an idiot that is the problem so I am asking some smart people on the basis I admit I dont know what I dont know :-) Thanks in advance