How to use the 4G extension

4G extension in uConsole is power down by default

First we need to power on the 4G extension

cm4

run enable_4g_cm4.sh or uconsole-4g-cm enable, depends on the version of your os image, both can do the same job

wait for couple seconds ,then use mmcli -L to see if there is a modem like

/org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] SIMCOM_SIM7600G-H

and if unpack your back shell , you will see a green LED light is flashing on 4G ext

A06 and D1

run enable_4g.sh or uconsole-4g enable depends on the version of your os image, both can do the same job

wait for couple seconds ,then use mmcli -L to see if there is a modem like

/org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] SIMCOM_SIM7600G-H

and if unpack your back shell , you will see a green LED light is flashing on 4G ext

Connect to 4G network

for this purpose,we need nmcli to create a gsm connection first

find out the primary port

mmcli -m any | grep "primary port"

you will get like cdc-wdm0 or ttyUSB2 , if you got cdc-wdm0, we suggest blacklisting some kernel modules by

$ cat /etc/modprobe.d/blacklist-qmi.conf
blacklist qmi_wwan
blacklist cdc_wdm

ttyUSB2 is what we want,but cdc-wdm0 is still worth to try if you know it well

Create 4g net connection and bring it up

sudo nmcli c add type gsm ifname ttyUSB2 con-name 4gnet apn [yourapn] gsm.username [gsmusername] gsm.password [gsmpassword]

sudo nmcli c up 4gnet

then if everything goes right, you will see ppp0 in sudo ifconfig , which means you got an PPPoE connection and an IP address

The connectivity of 4G may vary in different countries around the world, so please make appropriate adjustments based on the situation of your ISP operator, which may require some Linux-related skills.