Zyxel LTE5398-M904 connected to the cellular network but no Internet access

I also have tried to switch to vodafone italy. While more stable than iliad, I still see the same problem, albeit a little less frequently. It seems bandwidth utilization is a factor here, with most -if not all- of my disconnections happening while I have at lease 1mb/s or higher bandwidth utilization for at least a few minutes (rdp, streaming, videoconference, etc).

I have a ticket opened with support:

they offered a teamviewer remote desktop session and I learnt later that the objective of that session was to install qwinlog on my machine and gather a lower level log from the router.

Unfortunately qwinlog is a windows app and I do not have a windows machine, so that plan went out the window.

While anyone could install qwinlog on their machine, in order to complete the setup of the application to have it communicate with the router one would need to ssh into the rooter with root, or supervisor account, so you do need a teamviewer session with Zyxel.

The gentleman at zyxel taking care of my ticket is J'Quan Wallace, and the ticket number is 372477.

THE IMPORTANT BIT:

Please open a ticket, quote the situation and offer to let them do the qwinlog installation and setup for your router if you have a windows machine. Without those in depth logs it is difficult for them to find the root cause.

Most importantly, the more tickets we open, the more likely we are to get a solution by showing this is a widespread situation.

Good luck!

copied from my comment 54471, as I believe it's just as relevant here as it is over there.

I also have tried to switch to vodafone italy. While more stable than iliad, I still see the same problem, albeit a little less frequently. It seems bandwidth utilization is a factor here, with most -if not all- of my disconnections happening while I have at lease 1mb/s or higher bandwidth utilization for at least a few minutes (rdp, streaming, videoconference, etc).

I have a ticket opened with support:

they offered a teamviewer remote desktop session and I learnt later that the objective of that session was to install qwinlog on my machine and gather a lower level log from the router.

Unfortunately qwinlog is a windows app and I do not have a windows machine, so that plan went out the window.

While anyone could install qwinlog on their machine, in order to complete the setup of the application to have it communicate with the router one would need to ssh into the rooter with root, or supervisor account, so you do need a teamviewer session with Zyxel.

The gentleman at zyxel taking care of my ticket is J'Quan Wallace, and the ticket number is 372477.

THE IMPORTANT BIT:

Please open a ticket, quote the situation and offer to let them do the qwinlog installation and setup for your router if you have a windows machine. Without those in depth logs it is difficult for them to find the root cause.

Most importantly, the more tickets we open, the more likely we are to get a solution by showing this is a widespread situation.

Good luck!

I received a first beta version of a bugfix yesterday, but within ~30hrs the problem presented again.

Good news is, a fix seems to be on the way.

I wouldn't know what the fix is about exactly, but during the lifespan of my support ticket there's been a lot of talking about a "watchdog" which should have to do with the idea on this thread.

Hello,
i have an update

i have installed firmware update n13 on the LTE module,and solved my problem

testing by 14 days, and still no connection drop or any other problem

CA Working
No connection drop

update name:
Update_EG18EAPAR01A08V05M4G-R01A13M4G_01.200.01.200_V02

I think you got the wrong firmware,
i found a problem with this update,

to solve it, you need to factory reset the m904, or u will get connection drop on speedtests