====== EM06 LTE 4G Module ======

===== Introduction =====

This page mainly introduces how to use the [[https://www.khadas.com/product-page/4g-lte-module | EM06 LTE module]] from three parts. The first part is about how to query the support list of the LTE module, the second is some related operations under Ubuntu, and the third is some related operations under Android.

===== Support Check =====

You can view it on the following two pages: 
  * [[https://www.frequencycheck.com/carriers|Frequency check]]
  * [[https://www.spectrummonitoring.com/frequencies|Spectrum monitoring]]

===== Ubuntu =====

==== Preparation ====

=== Setup LTE Module ===

Install ''minicom'' in your SBC.

```shell
sudo apt update
sudo apt install minicom
```

Setting to ''usbnet'' mode.

```shell
sudo minicom -D /dev/ttyUSB2
```

After open ''minicom'' , enter:

```txt
AT+QCFG="usbnet",2

OK
```
LTE module needs power down and restart to switch mode. Unplug your SBC and plug again. LTE module now works in ''usbnet'' mode.

<WRAP info >
How to restore your LTE module?

```
AT+QCFG="usbnet",0
```

Unplug your SBC and plug again to switch back to default mode.
</WRAP>


==== Connect Network ====

<tabbox Xfce Desktop OS> 

Find ''edit connections'' in network menu.

{{/products/sbc/common/add-ons/xfce-lte1.png?800|xfce1}}

Add a new connection.

{{/products/sbc/common/add-ons/xfce-lte2.png?800|xfce2}}

Choose the connection type ''Mobile Broadband''.

{{/products/sbc/common/add-ons/xfce-lte3.png?800|xfce3}}

Choose where you are.

{{/products/sbc/common/add-ons/xfce-lte4.png?800|xfce4}}

Choose provider, this needs to be set according to your SIM card.

{{/products/sbc/common/add-ons/xfce-lte5.png?800|xfce5}}

Set your LTE module connection passwork, you need to remember it .

{{/products/sbc/common/add-ons/xfce-lte6.png?800|xfce6}}

Now, you can connect it, LTE module connections will be found in network menu.

{{/products/sbc/common/add-ons/xfce-lte7.png?800|xfce7}}

Input the password which you set.

{{/products/sbc/common/add-ons/xfce-lte8.png?800|xfce8}}

Finally, you will connect successfully!

<tabbox Gnome Desktop OS> 

Click the menu bar in the upper right corner to see the ''mobile board settings'' option.

{{/products/sbc/common/add-ons/gnome-lte1.png?800|gnome-lte1}}

Click the ''Network'', choose ''Add new connection'', and then click ''Next''.

{{/products/sbc/common/add-ons/gnome-lte2.png?800|gnome-lte2}}

{{/products/sbc/common/add-ons/gnome-lte3.png?800|gnome-lte3}}

Choose where you are.

{{/products/sbc/common/add-ons/gnome-lte4.png?800|gnome-lte4}}

Choose provider, this needs to be set according to your SIM card.

{{/products/sbc/common/add-ons/gnome-lte5.png?800|gnome-lte5}}

After choosing provider, the next two steps are to use defconfiguration. So you just need to choose ''next''. And then click ''apply'' . Now, you need a password, default is ''000''.

{{/products/sbc/common/add-ons/gnome-lte6.png?800|gnome-lte6}}

{{/products/sbc/common/add-ons/gnome-lte7.png?800|gnome-lte7}}

After entering the password, you can connect normally.

{{/products/sbc/common/add-ons/gnome-lte8.png?800|gnome-lte8}}

Open the corresponding settings and update the password in ''mobile broadband''.

{{/products/sbc/common/add-ons/gnome-lte9.png?800|gnome-lte9}}

<tabbox Server OS> 

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

```

</tabbox>

==== Check Network ====

<tabbox 5.15 Kernel>
```shell
$ ifconfig ppp0
ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>  mtu 1500
        inet 10.142.115.111  netmask 255.255.255.255  destination 10.64.64.64
        inet6 2408:8456:3230:3bc4:ea2c:150e:a766:2645  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::76b9:a691:80fe:992e  prefixlen 64  scopeid 0x20<link>
        inet6 2408:8456:3230:3bc4:a25f:a92d:d49:f994  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::5008:29a0:42fb:cd12  prefixlen 64  scopeid 0x20<link>
        inet6 2408:8456:3230:3bc4:a7ab:fe70:2367:66d6  prefixlen 64  scopeid 0x0<global>
        inet6 2408:8456:3230:3bc4:5008:29a0:42fb:cd12  prefixlen 64  scopeid 0x0<global>
        ppp  txqueuelen 3  (Point-to-Point Protocol)
        RX packets 100  bytes 8864 (8.8 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 109  bytes 8083 (8.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
```

Use ping command to test.

```shell
$ sudo ping www.baidu.com -I ppp0
```
<tabbox 5.4 Kernel>

```shell
$ ifconfig wwan0
wwan0: flags=4291<UP,BROADCAST,RUNNING,NOARP,MULTICAST>  mtu 1430
        inet 10.31.233.176  netmask 255.255.255.224  broadcast 10.31.233.191
        ether 46:57:61:32:f4:a5  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8  bytes 764 (764.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
```
Use ping command to test.

```shell
$ sudo ping www.baidu.com -I www0
```
</tabbox>

If your LTE module works normally, it will be successful.