My iPhone continually losing connection to 272 "No rooms found"

If it’s wifi related it shouldn’t affect things too much, as the wifi signals can co exist to some extent… also you can initiate a scan on most wifi solutions inc the BT SH2 to find channels and I think bandwidths, that have minimal interference.
If the interference is non wifi related and is a bad source of RFI, a scan can help avoid those frequencies affected.
However I think it’s unlikely to be interference from a neighbour… these modern wifi protocols are robust and designed to work in congested environments,

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Quick update. I switched off the 5 GHz via the Smart Hub and my system popped up straight away in the app. I restarted the 5 GHz and it’s been fine since and that was at least three hours ago. I’m wondering if there was a rogue device/connection on 5 GHz and resetting it has resolved things.

I also rescanned the channels on both 2.4 GHz and 5 GHz but I didn’t take a note of the what the channels were originally so don’t know if they’ve changed. So this could equally be what’s improved things.

I’ll keep you posted.

Update: thanks to Simon I can now listen again without losing connection, but only if I switch off 5 Ghz on the router. No complaints from other household members since I did this (well I haven’t told them lol). When I switch 5 Ghz back on the connection drops out.

I’m surmising 5 Ghz is used by newer devices in the house for better performance, and when I switch it off they simply revert to 2.4 Ghz hence why nobody is complaining when I switch it off.

I’m thinking next step would be to switch off all the 5 Ghz devices, then connect them one by one to see if there is a rogue device. Nothing new has been added lately but I guess it could have been an update.

Is the 5ghz and 2.4ghz sharing the same WiFi name (SSID) as it may be possible (all depends on your device) to rename the 5ghz to something else and re-enable.

On the BT SH2 you can’t do this, and would not normally recommended as it would prevent or interfere with band steering functionality for those protocols using both bands.

Are you sure it’s not a settings issue? My old Airport extreme had separate logins/connections for 2.4 and 5 ghz and it didn’t lose the connection to the app on my iPhone or iPad. My current Ubiquiti AmplifiHD has just one connection and assigns automatically 2.4 or 5 based on the device. In fact, the Naim apps on my iphone and ipad and my Muso were the only things on the 2.4.

My Ubiquiti network I have band steering set on one SSID sharing 2.4 and 5ghz bands but the odd device within my home struggles to connect so I also broadcast a dedicated 2.4ghz on another SSID, works a treat.

I believe the N-272 doesn’t have 5ghz wifi, so it likely remains on the 2.4ghz band whilst your iPhone may be on 5ghz.
Maybe the N-272 can’t see the devices on the 5ghz, hence the dropped or “No Rooms” situation?
I’ve renamed the 5ghz band to have “5G” as a suffix to the SSID name. That way, I am sure all devices are on the same band, in my case, having 2 Muso-QB which only use 2.4ghz and iPhones. All stable now.

It’s starting to make sense now. It’s odd that problems only started a few days ago when the streamer has been in use for a couple of months.

Yes it’s not possible to change the SSID on 5 Ghz on the router it’s just an on/off toggle.

I’ll see if I can find a way to fix my oiphone on 2.4 Ghz then then re-enable 5 Ghz on the router and see what that does.

Does anyone know if the newer platform streamers have 5 Ghz?

Correct the 272 is only 2.4ghz but even if your phone / tablet is connected via 5ghz the router will join the dots…

Thanks HiFiman. Please would you explain what you mean by join the dots. Do you mean the router should be able to get 2.4 & 5 Ghz devices working together?

Thanks

272 is 2.4ghz only and connects the router via this band. If your mobile or tablet connects via the 5ghz band the router will add you to the same home network.

If you can connect the 272 via an Ethernet cable as the early gen 1 streamers seem hit and miss when it comes to joining the device via Wi-Fi

Thanks. Unfortunately cable not an option at the moment but will be when the system is relocated in a month or two.

So in theory should there not be a problem with 2.4 and 5ghz devices communicating i.e. all communications pass through the router and it should do the translation.

I think the issue here with your BT router is when band steering is on and broadcasting both bands under the same SSID the 272 struggles.

My Ubiquiti Dream Machine I can have multiple SSIDs, my daughters JVC TV struggles with band steering so I created an additional SSID just for 2.4ghz this resolved the issue.

Exactly. That is how it should be. And is how it is with my Virgin Media Superhub for example. My Qb is on 2.4 and the iPhones are on 5 GHz and the Qb is the most reliably seen on all of my rooms.

The key word is “should”. It seems that although it “should” work, it doesn’t always… It didn’t work in my setting, hence I separated the 2.4 and 5ghz.
Since doing so, no issues.
For most computing, 2.4ghz is sufficient. I only really make sure I’m connected to 5Ghz (or ethernet) when sending a lot of large emails or video etc.
It’s an easy work around for me.

Yes, you normally wouldn’t want to do this (create a separate SSID between ISM bands) … it could affect wifi performance negatively on devices using 802.11n and prevent band steering.
The 802.11n protocol uses both 2.4 GHz and 5GHz and can steer between bands… it appears some of the older Naim streamer products have some interoperability issues with some, but not all WAPs here.

For reference 802.11g is on 2.4 GHz only
802.11n is on both 2.4 and 5GHz.
802.11ac is on 5 GHz only, but the older Naim products don’t support this protocol.
802.11ax is on 2.4 and 5 GHz, but no Naim products currently support this protocol.

Really you want to let your WAP use both ISM bands for optimum performance in your home (which is typical default functionality)… but with some older Naim products you might have to limit to 2.4GHz, but this has a big downside in that it prevents your WAP supporting 802.11ac for devices wanting to use this more efficient protocol.

You could create a separate SSID for only 2.4 GHz for your legacy Naim perhaps limited to 892.11g, and your main SSID work across 2.4 GHz and 5 GHz for everything else using all protocols… if your wifi equipment supports this. Having multiple SSIDs on the 2.4GHz band will marginally hit performance but might be an effective compromise workaround… alternatively use Ethernet for your legacy Naim where possible.

Edit: thinking about this further I think this is more … band steering of course is only part of the 802.11n and 802.11ax protocols… however, especially with 802.11n it really expects coverage between 2.4GHz and 5GHz to be the same, but depending on the number of APs you use this might not be the case with 5GHz very much smaller or weaker coverage than 2.4GHz coverage due to building/wall attenuation. This could interfere with the band steering method and expose some low signal quality interoperability issue.
The issue here is to add additional APs.
The BT SH2 is designed for additional mesh APs to be added, as is the case for most wifi routers. These additional APs would bettwecprovide consistency between ISM bands for the better operation of 892.11n.

So if there are problems with devices on 802.11n in terms of band steering the options are
1)disable band steering if possible (not recommended)
2)limit the SSID to 2.4GHz… (not recommended if wifi also supports 802.11ac as that will be disabled, but might be only compromise available)
3)create a separate 2.4GHz SSID just for the troublesome devices. (More recommended)
4)remove support for 802.11n from the wifi router, if option supported (more recommended)
5)add cooperating wifi access points to the wifi router (wireless or Ethernet mesh) to provide good 5GHz and 2.4GHz coverage. Although checking this will improve things by temporarily bringing troublesome device close to wifi access point to see if issues go (best)

If 5) doesn’t work with a particular device then there is almost certainly physical protocol interoperability issue, and any of the other options might be then considered. as well as Ethernet connecting.

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