Lost ethernet connection when I connect 4G modem

Hello,

I have discovered that my IoT2050 Advanced losses Ethernet connection (the lights don't power on and I have no information about ethernet ports in ifconfig command) when I connect the mPCIe modem ZTE ME3630.

At first, it worked all correctly, because I had 4G connection with the modem and I kept connecting to both Ethernet ports. But suddenly it stopped working the modem and the Ethernet ports. When I disconnected the modem, the Ethernet ports started working again. And when I connected again the modem, the Ethernet ports stopped working.

I am using IOT2050_Example_Image_V1.1.1.img in the SD card.

I have formatted the SD card but it continue working in the same way. When I connect the modem the Ethernet ports stop working.

I have a screenshot where I can see the modem working in the very first time:

What can I do?

Thanks!

I am using IOT2050_Example_Image_V1.1.1.img in the SD card.

The ZTE modem is: ME3630

Hello, today I have tried with USB wifi and works fine when 4G modem is connected (4G modem continues not working).

This are my ethernet configurations:

P1: static

P2: dhcp

Now for example I have this situation:

P1: static --> No cable

P2: dhcp --> Cable, but not lighing

Modem: Inserted in the IoT2050, but without connection

USB wifi: connected to WLAN with good internet connection

This is the result of ifconfig:

Hello!

I have bought a new SIMCom modem and my problems with the disappearance of the interfaces have finished. Now I have problems because the Internet connection is very slow, but I will open new post.

Thanks!

Hello!

Yes, now I am using another SIMCom modem in the same IoT2050 device with the same SD card and that problem has gone. Now I have a problem with the speed of the internet connection because is extremely slow as I describe in https://support.industry.siemens.com/tf/ww/en/posts/very-slow-internet-connection-on-4g-modem/272221/?page=0&pageSize=10

Thanks!