Lumia 950XL 5ghz Wifi issue

Anonymous
2016-01-13T02:33:23+00:00

So I have found when using my 5Ghz N network the phone will lose all WiFi networking.   On first use, it will connect up OK.  But let it sit and come back to it, it will have lost the WiFi network and the ability to see any other WiFi network with "no networks found".  Only a phone reboot will fix it until it happens again.

So far I've experienced it on my Linksys E8350 (supposed AC2400 and MIMO which the 950XL claims to support).  My Wifi router is set for Wireless A or N on 5Ghz, while it can do N, B, or G on 2.4

My workaround is to  only connect to the 2.4Ghz WiFi at this point. 

Anyone else experiencing complete WiFi radio failure like this?

Windows for home | Other | Devices and drivers

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  1. Anonymous
    2016-02-26T15:24:44+00:00

    GOOD NEWS everyone! Looks like the latest firmware update might have fixed the issue. After jumping onto Firmware Version 01078.00038.16025.39005 that was released yesterday (2/25/16) the issue appears to have subsided. I have been connected to My 5Ghz Network for over 20 hours now and still going strong. To get this firmware version just get the Windows Insider App and jump onto the Production ring, or if you're already on another ring just jump to production, update your phone, and then jump back to your original ring. I will switch my router back to AC and update the results but for now it appears that MSFT might have gotten around to fixing this very annoying bug!

    Build: 10.0.14267.1004

    Firmware: 01078.00038.16025.39005

    Hardware Revision Number: 4.0.3.1

    Radio Software Version: BO25c43.00009.0001

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  2. Anonymous
    2016-02-24T11:06:28+00:00

    Can confirm that after the 5ghz networks disappear, toggling the SIM on and then off restores the connections. It is definitely looking like a firmware or driver bug.

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  3. Anonymous
    2016-02-20T14:38:57+00:00

    The only workaround is to stick with 2.4GHz until fixed. Even build .107 has this issue. Also enabling Hey Cortana will result in unbearable echo for the caller, so that cool feature is borged too.

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  4. Anonymous
    2016-02-19T18:08:32+00:00

    same for my 950xl. Reboot get back on wifi5 - within 1 hour all 5 nets go away. Needs to be fix with firmware! COme on ms get with it.

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  5. Anonymous
    2016-02-15T14:06:58+00:00

    Good News. I think I found the source of the 950 XL 5GHz WiFi issue for me, not sure for others or other WiFi problems.

    I forwarded all calls to my home phone then disabled the cellular data and SIM toggles to make sure the phone was only using WiFi data.  I found that when the SIM toggle is switched off, the 5GHz WiFi band also disappeared, but the 2.4 GHz band remained visible. This wasn't so apparent because I received a replacement 950, set it up and the 5GHz band stayed visible for 24 hours before it stopped working. However, when it disappeared, I started moving the SIM toggles back to the ON position and noticed the 5GHz WiFi signal reappeared after 30 seconds. I have not noticed any issues with Bluetooth. 

    I have the dual sim, unlocked 950 XL and have had this particular WiFi problem from the stock firmware all the way to the most recent Fast Ring Insiders' build release. Somehow the SIM activation toggle also disables the ability to detect and receive the 5GHz WiFi band. In conclusion, it's not the router as I'm now more convinced of a firmware bug.

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