Configuration of an LTE modem on the Raspberry Pi ------------------------------------------------- [HUAWEI 4G Dongle E3372](https://consumer.huawei.com/za/routers/e3372/specs/) is an USB 2.0 device with a microSD card reader and a slot for a standard SIM Card ![Huawei-e3372-rpi-image](Huawei_e3372_rpi.jpg) After plugging in the USB dongle check if Linux recognized it. See `Huawei Technologies Co., Ltd. Modem/Networkcard` `lsusb` ``` Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 04d9:0007 Holtek Semiconductor, Inc. Bus 001 Device 005: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard Bus 001 Device 003: ID 2516:012f Cooler Master Co., Ltd. Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ``` Check if the driver created the modem device. You should see the `/dev/cdc-wdm0` `ls /dev/cdc*` ``` /dev/cdc-wdm0 ``` Install `Network Manager` `sudo apt install network-manager` Check modems avalable to the network manager `mmcli --list-modems` ``` /org/freedesktop/ModemManager1/Modem/0 [huawei] E3372 ``` Check status of the modem `mmcli --modem=/org/freedesktop/ModemManager1/Modem/0` ``` -------------------------------- General | dbus path: /org/freedesktop/ModemManager1/Modem/0 | device id: 46c19d81068f7f5001140bf211de0b717b981698 -------------------------------- Hardware | manufacturer: huawei | model: E3372 | revision: 21.200.07.00.55 | supported: gsm-umts | current: gsm-umts | equipment id: 861821033381192 -------------------------------- System | device: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.3 | drivers: option1, huawei_cdc_ncm | plugin: Huawei | primary port: ttyUSB1 | ports: ttyUSB0 (at), ttyUSB1 (at), cdc-wdm0 (at), wwan0 (net) -------------------------------- Status | unlock retries: sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10) | state: connected | power state: on | access tech: lte | signal quality: 70% (recent) -------------------------------- Modes | supported: allowed: 2g; preferred: none | allowed: 3g; preferred: none | allowed: 4g; preferred: none | allowed: 2g, 3g, 4g; preferred: none | current: allowed: 2g, 3g, 4g; preferred: none -------------------------------- IP | supported: ipv4 -------------------------------- 3GPP | imei: 861821033381192 | operator id: 23101 | operator name: Orange | registration: home -------------------------------- 3GPP EPS | ue mode of operation: csps-2 -------------------------------- SIM | dbus path: /org/freedesktop/ModemManager1/SIM/0 -------------------------------- Bearer | dbus path: /org/freedesktop/ModemManager1/Bearer/0 ``` Check the SIM card status `mmcli --sim=/org/freedesktop/ModemManager1/SIM/0` ``` --------------------------- General | dbus path: /org/freedesktop/ModemManager1/SIM/0 --------------------------- Properties | imsi: 231014462647671 | iccid: 8942101180024842166 | operator id: 23101 | operator name: Orange ``` Create configuration for the modem. Set `con-name 'Orange-LTE'` to any name and `apn 'internet'` to the APN name of your mobile provider `sudo nmcli connection add type gsm ifname '*' con-name 'Orange-LTE' apn 'internet' connection.autoconnect yes` The configuration file is created with the con-name as filename and nmconnection as the suffix. Edit if neccessary `sudo cat /etc/NetworkManager/system-connections/Orange-LTE.nmconnection` ``` [connection] id=Orange-LTE uuid=8dc159fe-e0ed-4a56-9b7f-fb813e2c4753 type=gsm permissions= [gsm] apn=internet number=*99# [ipv4] dns-search= method=auto [ipv6] addr-gen-mode=stable-privacy dns-search= method=auto ``` Check status of the network device `wwan0`. It should have an IP address assigned by your mobile provider (e.g. 10.121.79.142) `ip addr show wwan0` ``` 4: wwan0: mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000 link/ether 00:1e:10:1f:00:00 brd ff:ff:ff:ff:ff:ff inet 10.121.79.142/30 brd 10.121.79.143 scope global noprefixroute wwan0 valid_lft forever preferred_lft forever inet 169.254.62.145/16 brd 169.254.255.255 scope global noprefixroute wwan0 valid_lft forever preferred_lft forever ``` Check if the internet is reachable `ping -I wwan0 www.google.com -c 5` ``` PING www.google.com (142.251.37.100) from 10.121.79.142 wwan0: 56(84) bytes of data. 64 bytes from prg03s13-in-f4.1e100.net (142.251.37.100): icmp_seq=1 ttl=117 time=23.5 ms 64 bytes from prg03s13-in-f4.1e100.net (142.251.37.100): icmp_seq=2 ttl=117 time=36.9 ms 64 bytes from prg03s13-in-f4.1e100.net (142.251.37.100): icmp_seq=3 ttl=117 time=32.7 ms 64 bytes from prg03s13-in-f4.1e100.net (142.251.37.100): icmp_seq=4 ttl=117 time=43.7 ms 64 bytes from prg03s13-in-f4.1e100.net (142.251.37.100): icmp_seq=5 ttl=117 time=29.7 ms --- www.google.com ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 11ms rtt min/avg/max/mdev = 23.539/33.298/43.704/6.781 ms ```