FWA710 dropping 5G and returning to 4G.

Noddy
Noddy Posts: 63  Ally Member
First Comment First Answer Friend Collector Third Anniversary
in Mobile Broadband

Hi all,

An annoying issue that has started in the last few days. I don't think it is a router issue, and I have also raised a ticket with EE about this. But thought I'd ask the question here also in case their is a known bug?

Using latest firmware for awhile now.

But this is what I'm seeing, randomly it returns to 4G (LTE-A):

No_5G.jpg

I can either choose to reboot the router (hence the low uptime shown above) or, toggle the "access technology" to something that I don't get, like 5G-SA which forces a disconnect, then I change back to 5G-SA/5G-NSA/4G (Auto) to reconnect.

On reconnect, I get 5G:

5G_Returns.jpg

My signal strength is pretty much OK.

RSSI -72 (Good)
RSRP -83 (Good)
RSRQ -11 (Good)
SINR 3 (Fair)

SINR could be better but I am 4KM away from the tower but I get decent ping and speeds.

So yeah, any ideas? As I'm stumped. 😁

Thanks.

All Replies

  • Zyxel_Melen
    Zyxel_Melen Posts: 3,179  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Noddy,

    This issue should be less related to the firmware. Additionally, you may feel free to share the ISP's feedback with us.

    Zyxel Melen


  • Noddy
    Noddy Posts: 63  Ally Member
    First Comment First Answer Friend Collector Third Anniversary
    https://community.zyxel.com/en/discussion/comment/75981#Comment_75981

    Thanks @Zyxel_Melen . When I logged a fault via the app with EE they said there were no issues. I've yet to call to take it further. Current workaround is to take the Cell and RFCN ID's and to add a 4G Lock. It drops randomly, but, reconnects with 5G again. So no more worrying about dropping back to 4G. But no fix, as of yet.

  • Noddy
    Noddy Posts: 63  Ally Member
    First Comment First Answer Friend Collector Third Anniversary

    I also plan to do a power down of all kit this weekend, to see if that helps.

  • Noddy
    Noddy Posts: 63  Ally Member
    First Comment First Answer Friend Collector Third Anniversary
    edited April 6

    @Zyxel_Melen unfortunately this doesn't appear to be an ISP issue. I'm trying a Vodafone SIM at the moment, 5G has good stats according to Router and Zyxel Air app. Yet Router has been up for just 3 hours and in that time it has gone back to 4G. That's two different ISP providers and two different masts / cells. What gives? Here are some stats after I toggle the wan from 5G-SA back to 5G-NSA/4G.

    Vodafone_1.jpg Vodafone_2.jpg Vodafone_3.jpg Vodafone_4.jpg
  • Noddy
    Noddy Posts: 63  Ally Member
    First Comment First Answer Friend Collector Third Anniversary

    Just a quick update. Hoping that after speaking with Zyxel support (who have raised a feature request for me) that we can get an additional drop-down in the band selection menu, so that we can choose "5G-SA/5G-NSA" without a 4G option. The idea being if this disconnect happens it can't fall back to 4G and hopefully would just re-connect again with 5G. I've performed a factory reset of the FWA710 and I'm monitoring how that goes as well.

  • Noddy
    Noddy Posts: 63  Ally Member
    First Comment First Answer Friend Collector Third Anniversary

    Also interesting that others have similar problem all of a sudden…

    FWA710 losing 5G — Zyxel Community

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