LTE5398-M904 Connection & WiFi problems

Nykos

Hi,
I have a strange problem with my LTE5398-M904.
For example when I have several devices connected on WiFi (2 smartphone, 1 tablet and 1 imac) if I download something from any device the others will be disconnected from WiFi and after a few minutes LTE connection is not avaiable anymore (but all lights on the router are green) and I have to reboot the router to have LTE connection working again. I have this issue on both WiFi 2,4ghz and 5ghz.

I am on firmware V1.00(ABQV.2)C0 and LTE Module EG18EAPAR01A08M4G

I have tried my sim card on other LTE routers (huawei, tplink and mikrotik) and everything is working well. I also tried to reset to default settings but I have always the same problem. 

Can anyone help me please?

Korg

last lte module firmware here https://www.ebay.es/itm/155538809549?mkcid=16&mkevt=1&mkrid=1185-127638-7840-0&ssspo=Y9dRIfCtRrW&sssrc=2349624&ssuid=Y9dRIfCtRrW&var=&widget_ver=artemis&media=COPY

tonygibbs16

Hello @Nykos

I think that you are on the newest firmware available, according to https://www.zyxel.com/global/en/support/download?model=lte5398-m904

You could contact support using the form if you still have the issue, see https://www.zyxel.com/global/en/form/contact-support

If you have some logs then they could be useful.

Kind regards,

Tony

Janusz_Nosacz

Try updating the modem firmware. Description in my post:
https://community.zyxel.com/en/discussion/16882/lte5398-m904-lte-module-upgrade#latest

BruCom

Hello @Nykos

May I ask you which mobile operator do you use ?

I think to have the same problem, LTE connection established but suddenly no internet access from any device but I never thought to link this behaviour to WiFi but, rather, to the operator because, to me, the problem occurs only with a specific one.

Thanks

JeanFrancois

https://community.zyxel.com/en/discussion/15187/lte5398-m904-connection-wifi-problems

May I suggest you to try the IPv4+v6 trick (see cellular WAN & APN settings, doesn't matter if no IPv6 address is assigned as long as the router tries to get one when IPv4 is renewed). There are at least 3 threads dealing with this issue in this forum. And no fix from Zyxel after several months 🤡