4G LTE Module

Operators and Frequency Bands

You can view operators and frequency bands supported by your region by visiting these two websites:

  1. Frequency Check
  2. Spectrum Monitoring

LTE Module Usage Instructions

Install Minicom in Ubuntu

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$ sudo apt update
$ sudo apt install minicom

Switching to USBNet Mode

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$ minicom -D /dev/ttyUSB2

atfer open minicom , enter:

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AT+QCFG="usbnet",2

OK

Power Down and Restart

The LTE module needs to be powered down and restarted to switch modes. Power cycle your SBC by replugging the USB-C power cable, and your LTE module now will function in USBNet mode.

Restore LTE Module

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$ minicom -D /dev/ttyUSB2

The default mode is 0

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AT+QCFG="usbnet",0

Power down and restart to switch back to the default mode

Step1: Open Mobile Board Settings

LTE_gnome_open

Click the menu bar in the upper-right corner and select Mobile Broadband Settings option.

Step2: Add New Connection

Click Network, choose Add New Connection, and then click Next.

LTE_gnome_new
LTE_gnome_next

Step3: Choose Your Provider’s Country

Choose your provider’s country.

LTE_gnome_country

Step4: Choose Your Provider

Choose your provider. This needs to be set according to your SIM card.

LTE_gnome_provider

Step5: Enter Password and Connect

Using the default configuration, just choose next. Then click apply. The default password is 000.

LTE_gnome_apply
LTE_gnome_psk

After entering the password, you can connect normally.

LTE_gnome_success

Changing the Password

Open the corresponding settings and update the password in Mobile Broadband.

LTE_gnome_change_psk

LTE Module with Ubuntu Server

If you use Ubuntu server, use this command to connect to the 4G LTE module.

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$ sudo nmcli connection add type gsm apn 3gnet user 0000 password 0000 con-name "EM06 4G".

Checking Network Connectivity

Use the ping command, with the -I flag to select the LTE module interface.

Checking Network Nodes

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$ ifconfig -a

...

wwan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 1a:68:e0:a7:94:88  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

...

You will find the interface wwan0 via the command ifconfig -a

Using ping Command to Test

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$ ping www.baidu.com -I wwan0

If your LTE module is functionally normally, you should see a stream of ping echoes.