I just received a new LE910C4 modem today. I installed it in the hat and then proceeded to install a fresh copy of Raspberry Pi OS. After the OS install, I get an email that $26 of data has been charged to my SIM. I’m not sure what happened because there is also 8MB of upload in the data charge. wlan0 was setup during install, so why was wwan0 used? Can I get a refund for those charges?
To add insult to injury, wwan0 is not functional after OS install. Can’t ping:
pi@raspberrypi:~ $ ip a show wwan0
4: wwan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 36:d8:a1:87:b5:03 brd ff:ff:ff:ff:ff:ff
inet 192.168.225.51/24 brd 192.168.225.255 scope global dynamic noprefixroute wwan0
valid_lft 41945sec preferred_lft 36545sec
inet6 fe80::74eb:ad6e:7a34:2a87/64 scope link
valid_lft forever preferred_lft forever
pi@raspberrypi:~ $ ping -I wwan0 google.com
PING google.com (172.217.2.110) from 192.168.225.51 wwan0: 56(84) bytes of data.
^C
--- google.com ping statistics ---
7 packets transmitted, 0 received, 100% packet loss, time 266ms
ECM seems configure correctly:
AT#USBCFG?
#USBCFG: 4
OK
AT#ECM?
#ECM: 0,1
OK
AT+CPIN?
+CPIN: READY
OK
AT+CREG?
+CREG: 0,5
OK
AT+CGDCONT?
+CGDCONT: 1,"IP","super","",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