We are trying to use the Sixfab kit with the LTE HAT and the Telit LE910C4-NF with a US T-Mobile SIM over ECM (because we are using Ubuntu 18.04 and the packages for running your script are only available on 20.04).
We following the instructions in Internet Connection with Telit LE910C1 module using ECM Mode and it seems to have set the APN properly and connected, but we don’t have an IP address on the wwan0 interface even though we brought it up with
ifconfig. Below I have included some various commands I saw requested for debugging in another thread. Is there any way to determine what the the issue is? Is it lack of coverage (we have another T-Mobile SIM in an Android phone and it gets coverage in the same room)? Something still not configured quite right with the APN?
We also periodically seem to have trouble talking to the LTE module over minicom. It seems to get into a state where no keystrokes appear and minicom locks up until the USB cable is disconnected.
Also, is there an explanation of what the LEDs on the HAT mean? Sometimes the STAT light is solid blue, but most often is is blinking slowly at about 2Hz. Occasionally the USER LED is light green.
AT+CPIN? +CPIN: READY OK AT+CREG? +CREG: 0,1 OK AT+CGDCONT? +CGDCONT: 1,"IP","fast.t-mobile.com","",0,0,0,0 +CGDCONT: 2,"IPV4V6","ims","",0,0,0,0 +CGDCONT: 3,"IPV4V6","sos","",0,0,0,1 +CGDCONT: 4,"IPV4V6","attm2mglobal","",0,0,0,0 OK AT+CPIN?? +CPIN: READY OK AT+QGMR ERROR AT+CPAS +CPAS: 0 OK AT+CFUN? +CFUN: 1 OK AT+COPS? +COPS: 0,0,"T-Mobile",7 OK AT+QCFG="band" ERROR AT+QCFG="nwscanseq" ERROR AT+QCFG="iotopmode" ERROR AT+CSQ +CSQ: 26,5 OK AT+QCSQ ERROR AT+QNWINFO ERROR AT+CGATT? +CGATT: 1 OK AT+QCFG="usbnet" ERROR AT#ECM? #ECM: 0,1 OK