grouping 5hz and 2.4 hz

Yes it may help - seperate the bands in your router configuration pages and give the 5Ghz band a slightly different name, for example if the network SSID is currently called ‘MyBTNetwork22’ then leave that name for the 2.4Ghz band to use and add "-5G” to the 5Ghz SSID eg. ‘MyBTNetwork22-5G’ and all will then use the 2.4Ghz band (recommended). Put other non-Sonos wireless networked devices onto the 5Ghz band out the way, if they are capable and within reach.

Set the 2.4Ghz band to ‘fixed’ Channel 1, 6 or 11 (non-overlapping) and set a channel-width of 20Mhz only and see if that improves things.. leave your mobile controller device cinnected to that band too.

Thanks Ken

It is unfortunate that the two worst places for wifi coverage are both stereo pairs and the two rooms that we group the most!

We do have a lot of issues with the S2 app on the mobile; often the players don;t show up, even when they are playing; again seems to have got worse over the last 6 months.  I also use my laptop as a controller.  Would you recommend keeping that on 5hz or also moving that to 2.4hz?  I need it for work zoom calls etc, not really for streaming

thanks

David

Keeping everything Sonos on one band is the least likely to cause issues. If your router isn’t misbehaving having the controller on 5 and the speakers on 2 should work reasonably well.

Some visibility glitches are reduced if you set static/reserved IP addresses for your Sonos using the rotuer’s DCCP settings page. Follow that with a power-down for all Sonos and a full router (amd disks) reboot.

Ok thanks Stanley - I’ll give that a go too

Many thanks

David

Just to briefly mention aswell @DavidJS that the BT Smart Hub 2 is not a very well-regarded router in this community and many users have had some difficulties with it - if you search you will see that some past firmware updates have caused some users to do what you’re looking to do here and put all Sonos devices on the 2.4Ghz band - some have even (temporarily) switched off the 5Ghz band altogether (not recommended).

So I think if you put everything Sonos related (controllers too) onto 2.4Ghz band and other wireless products on the 5Ghz band (where practicable) you should see things improve.

Thanks Ken

Yes, I had seen that. 

It is ironic though that through the BT disks I do have very reliable wifi in all of the far flung corners of the property, so actually very happy with all other aspects of the BT wifi!

Thanks again for the advice

David

Yeah it’s not a WiFi connection issue per-se, it’s more about a multicast ‘device discovery’ issue between the Sonos controller App and the speakers - the SSDP (part of the UPnP protocol) multicast ’discovery’ packets transversing the BT Hub network were/are not always successfully passing between its various network segments. So putting all on the same WiFi band and channel can help with this. At least that’s my understanding.

I don’t fully understand all of the technical bits, but it makes sense as I have found that toggling the wifi on my mobile on and off (when the speakers have gone awol) often sorts things out and magiclly they reappear!

And interestingly, the desktop app is much more reliable; not 100% but much better than the mobile app

Some things on a mobile phone may not help this issue of ‘device discovery’ too. 

On my iPhone for example, I personally choose to do the following to try to assist with ‘device discovery’…

• Switch off ‘Private Address’ (MAC spoofing) in the local network connection property settings
• Switch off ‘WiFi Calling’ in Settings/Mobile Service or ‘Settings/Phone’
• Switch off ‘Mobile Data’ access for the Sonos App - to make the App always use a WiFi only connection.
• Switch off VPN client and other security software on the mobile device

On a separate note, I also choose to reserve the Sonos IP addresses in the routers DHCP reservation table.

Presume this is done on the router admin screens?