Ubuntu - 4G 模塊(EC-20) 設定( 4G module (EC-20) in Ubuntu system)

How to Config 4G-module

STEP 0 : Power off the device, then insert 4G module and SIM card.

NOTE : Make sure the device is power off before insert 4G module and SIM card, 

otherwise the device、4G module and/or SIM card may be damaged.

STEP 1 : Power on the device, Click network connection icon ,

then choose "New Mobile Broadband connection".

then you will see the following window, click "Next" button to the next step.

STEP 2 : Choose Provider's country or region of the SIM card you insert in STEP 0.

STEP 3 : Choose or Set the Provider's name.

STEP 4 : Choose or Set APN.

STEP 5 : Confirm your config and finish.

How to  add the configure in the image 

Step 1 : If the configuration has no error , then you could see a config file named "China Telecom connection" at /etc/NetworkManager/system-connections/.

ls /etc/NetworkManager/system-connections/

You could get the following information:

Step 2: Get the " rootfs.img " from your image folder 

Step 3:Create  a "temp" folder , then mount the "rootfs.img " into "temp" folder 

Step 4:Use "Chroot " (change root directory (change to root folder ) command 

Step 5 : Copy the configure file into temp folder 

Step 6:Check the configure file in temp/etc/NetworkManager/system-connections/