Sonos iOS app often fails to connect

Try switching off wifi assist https://support.apple.com/en-us/HT205296

Also, switching off private address may help https://support.apple.com/en-gb/HT211227

Thanks, I will try disabling private address. Wi-Fi assist is not applicable for my iPad 

It appears that neither of those are options on my iPad which is the device that disconnects most often 

Describe your network for us (with model numbers). Are any of the SONOS units wired to your network? Have you reserved IP addresses for regular network clients? Can you correlate these events with anything? Perhaps with an update? Is there a BRIDGE in your SONOS system? Duplicate IP address?

Submit a diagnostic and post the confirmation number here. SONOS staff can comment.

For the record, I’m not experiencing this issue. I’ll agree that endless reboots will not fix fundamental issues. There could be a hardware failure of some sort. One should never assume that the issue must be [ … ] or cannot be [ ...], else one is likely to be blindsided.

You’d think that I’m too smart to be victimized by a duplicate IP address, but I once forgot about a little seldom used palm sized address device hidden away in a cabinet as I reconfigured my network. It duplicated the IP address of an ancient NAS that I initially thought was failing. Fortunately, I swallowed my pride, checked for duplicates and …. darn!

Three Play:3, Two Play:1

All connected via Wi-Fi, DHCP for IP addressed, no reserved IPs. No bridge, all updated to the latest S2 version. Two iPhone,

one iPad and Mac Pro all on latest software, all randomly disconnect from all Sonos devices, sometimes while it’s playing music which is really super frustrating.

How can I assign static IP addresses for the sonos speakers? Will that help? Honestly both the iOS app and Mac app are terrible. They both refer to each other for advanced feature. I wish there was advanced setting and monitoring app for administration functions. 

One cannot assign a fixed IP address using the SONOS controllers. This can be done in most routers. Most routers will call this “reservations”, some will call it “fixed”. As in my drama above, reservations are not a guarantee against duplicates, but they will lower the risk. In SONOS systems duplicates can show up after a SONOS firmware update.

Are you using multiple access points?

Single access point. My Ethernet router is the DHCP router. Will reserving IP address fix the problem? I don’t think I have IP collision 

From my seat I don’t have enough data to determine the fundamental issue. Some of your symptoms are consistent with a duplicate IP address. Address reservation is a great way to prevent issues.

Make sure that the phone/pad is using your WiFi. This is not as silly as it seems. In my area the cable company’s router provides WiFi for your home and a public WiFi access point for any cable company customer who passes by. The idea is that their customers have Internet access everywhere. It’s a variation on ‘Guest’ WiFi access. If you are using the public access point you’ll have access to websites email, and most Apps, but you cannot control your SONOS system because, as far as SONOS is concerned, you are not at home. If you have set your phone/pad to use this public WiFi, pay attention to which network you are using.

Submit a diagnostic and post the confirmation number here.

You can use FING to scan your network. It will highlight duplicate IP addresses.

Thanks for the tip on FING. I’m assuming the “generic” IP addresses are the Sonos speakers? All other devices report themselves accurately. No duplicate IP addresses. I guarantee iOS devices are on my Wi-Fi. Is it possible that the Sonos speakers could be trying to join another nearby network? Again, this is where some sort of admin interface would be great, feel like I’m in the dark on the speakers configs. I’ve submitted dozens of not 100s of diagnostic reports, next time it fails to connect I’ll post the number here. Is there a way to view the reports I’ve submitted or is that lost when the app is reset?