1. seidler2547's Avatar
    I have a strange problem which started with the update to ABJ879: my keyONE fails to connect or fails to stay connected to any 5GHz network which has 80MHz or more channel width.

    It was a long process finding this out, and it wasn't until I connected to an older access point that didn't have 80MHz. I tested this with a Fritz!Box router and the Ubiquiti network gear, the keyONE will see the 80MHz networks fine, tries to connect, sometimes connects but most of the times fails, then the networks disappear and after some time appear again.

    I've since set both the Fritz!Box and the Unifi stuff to 40Mhz and finally I have proper WiFi again, but something is really wrong there.

    I even tried downgrading to ABG366 using a no-wipe autoloader, but no change. I have put off wiping the phone as I just don't really have the time to set it all up again.

    Anybody else got some insights to share? I also tried resetting the network settings, no change. I have a feeling that the WiFi chip firmware is somehow borked.
    12-04-18 03:06 AM
  2. sandyhois's Avatar
    I recently noticed that the list of wifi channels available with my US cable subscription had changed. I was unable to avoid interference from my neighbors by changing to channel 58 for example. Apparently regulations have been changing and vary by country:

    Could it be your wifi service and not the connecting device that is the issue?
    12-04-18 04:46 AM
  3. rocnrol's Avatar
    I was having the same issue with the 5G in our house, phone would never stay connected. Thing was..... No one in the house was able too.

    Turned out to be an issue with the WIFI hardware. Just had it replaced, so far so good
    12-04-18 06:57 AM
  4. seidler2547's Avatar
    Well the other 20 devices in the house connect just fine, so it's not the hardware. Also, I've used the same setup for a long time now. I've been to another place today and again my phone wouldn't connect to 5GHz and all of the other ones would. I've checked that in the router and several devices were connected at 5GHz, only my keyONE wouldn't.
    12-04-18 01:04 PM
  5. sandyhois's Avatar
    You could try a network settings reset so that the K1 will "forget" prior network configs
    12-05-18 04:56 AM
  6. seidler2547's Avatar
    Yeah that's what I did.
    12-05-18 01:07 PM
  7. skrble's Avatar
    I know that this is not the kind of solution you are looking for, but wouldn't it be easier to switch to 2,4 GHz band or entirely replace the router?

    I've heard there might be certain advantages for 5 GHz, but I've been also seeing these kinds of topics here for some time. It felt to me like this issue is rather hit or miss.

    I just think this kind of issue is just hardly solvable. There might be some sort of firmware level change since that update. Downgrading to older Android might, however, not downgrade drivers etc.
    12-05-18 04:40 PM
  8. owczi's Avatar
    There are known issues with channel width, and on both bands at that. My experience is, if your AP allows this, to set it to "Auto". I use slightly older APs, ex-Motorola / Zebra / Extreme Networks. Not sure what method "Auto" uses, but it works for me. There is always some device that will have issues, so I leave it to the AP.

    Also since Oreo, the option to select the preferred band is gone...
    12-13-18 10:42 AM
  9. seidler2547's Avatar
    Well trouble is it was all working perfectly, only broke with the last update :-(
    12-17-18 04:55 PM
  10. sandyhois's Avatar
    My wifi broke completely after Sprint update (ABH608). I had to use the dreaded factory reset to fix. Have to say the phone seems "new" to me now and I received the latest Sprint update without issue. So if you have nothing else to do over the holidays...
    12-18-18 04:27 AM
  11. elcheapodeluxe's Avatar
    The KeyONE has had problems for quite some time now with 5GHz network connectivity. At home I use Google WiFi which has only one SSID and channel steers 5GHz capable devices to 5GHz. Because the band steering is automatic there was no way to force the KeyONE to only use the 2.4GHz side. KeyONE stopped working correctly sometime around October of last year I'd say and didn't resolve for about 9 months. Had a separate 2.4GHz only access point just for the KeyONE. Sometime after Oreo the problem was resolved.

    Now, none of the posts over that time from the many users pained by this problem dove into channel width. That is an interesting observation. Although my KeyONE currently works with the current firmware, I wonder if there was a channel width component to this whole thing....
    12-18-18 11:58 AM
  12. sandyhois's Avatar
    Following the factory reset, my wifi connects well to my 5g ssid. For me the issue has always been about neighborhood interference on certain wifi channels not channel width. Seems that the number of devices on 5g has increased and the number of available 5g channels has decreased lately.
    12-18-18 04:18 PM

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