New XB8 Modem/Router - Unable to use WiFi6E/6Ghz

Thanks for the note, Richard.  Simply as an update, the Xfinity app allows one to think that the bands can be separated, but it won't do it and it has language that it isn't recommended.  It should be as easy as enabling the band separation and choosing 'save' within the app, but that change never goes into effect.  After trying a half dozen times, I've given up.

One other related tidbit on this topic (and you may know this already): Xfinity has removed the ability to manage WiFi settings via the web interface.  There is a succinct little message present when opting to edit each of the bands in the "Gateway > Connection > Status" section that states:

"Wi-Fi Mode, Security Mode, Channel Selection, Channel Mode, and Channel Bandwidth are being managed automatically to help optimize your home Wi-Fi network and improve Wi-Fi coverage. To edit your Wi-Fi Network Name & Network password, please download the Xfinity xFi app or visit xfinity.com/myxfi"

It is a rather laughable scenario overall: a new router capable of a 6Ghz signal, devices capable of that type of connection aren't allowed or able to connect, and taking any action to manually manage the settings that would make said signal available are....verboten.

If you or any of your peers have a trick regarding splitting the bands, I am all ears.   :) 

This knowledge article appears to confirm that an XB8 will not allow manual administration of the WiFi: https://www.xfinity.com/support/articles/change-wifi-channel-admin-tool

I also note that "XfinityKatie" confirms that newer devices prohibit splitting the bands: https://forums.xfinity.com/conversations/your-home-network/split-bands-into-50-and-24-ghz-devices-cannot-find-or-connect-to-the-24-ghz-band/64b438db6059bc2b7f1dc9d1 

How one gets the new routers to allow 6Ghz connection is a definite mystery!

Correct, the bands are not able to be separated anymore to optimize your Wi-Fi automatically. At this time the only way to have separate bands and to be able to customize to your liking is to have your own modem. 

@XfinityJanelle  - I appreciate your confirming that the bands cannot be separated; thank you.  It is unfortunate that Xfinity does not allow customers the ability to control the equipment/settings.

@WBL_MN you are very welcome and I am happy we could help with your question. I will definitely make sure to submit your feedback. Please feel free to reach out if you need anything else or have any additional questions!