Hey!
I have found a solution to the problem where my Iphone does not find the sonos system from time to time. And sometimes not at all.
The problem was that sonos have godt an IP adress like 192.168.68.55 , but the network my phone was getting from the mesh network was 232.168.xx.xx
This means that they wil not connect together.
The soultion was to turn of the 5G and airdrop, set wifi of and on again and then chek that the phone connects to 192.168. ***. ** Then i got in to the Deco app ( wifi app). And got to the advance menu.
Here you want to set a permanent IP adress to your phone or device. I found the IP adress that is on the same network as sonos (but ofcourse the last digits is diffrent) and set this up as the IP adress that i want the network to give to my phobe each time it conects to the network.
After this it has been working just fine, no more problem.
ALSO!
You must make sure there is no spesial symbols or “Æ, Ø, Å” in the networks name. Change this and resett wifi for sonos and your phone if the case!
Moderator edit: Partially concealed what looks like a public IP address.