Hi @GW326
Welcome to the Sonos Community!
I’m sorry to hear of the problem you’re having getting your iPhone to connect to your Sonos system - and for so long!
As the above, excellent advice highlights, the issue likely lies with your phone configuration, or your network configuration/topology. As it’s been long-term, I think it is most likely due to your phone. Was your iPhone provided to you by your work, by any chance? If so, it may have restrictions imposed upon it that only your place of work’s IT department would be able to resolve. Alternatively, if you have VPN software installed, that could also cause the problem you describe.
There is also a setting on iPhones that can disrupt normal functionality of the Sonos app:
Disabling MAC Randomization
- Open the Settings on your iPhone, iPad, or iPod, then tap Wi-Fi or WLAN.
- Tap the information button next to your network.
- Turn off Private Address.
- Re-join the network.
I’m confident that the solution to your problem now lies somewhere in this thread, but if the issue persists no matter what you try, I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.
I hope this helps.