Did you try using another phone?

Yes. Same problem.

Not sure how hard wiring the phone would make a difference, it communicates to your WiFi, and then to the Arc. Unless you can get the Arc connected to the LAN in some way.

But I’m a little surprised. Perhaps I need clearer data. Is the WiFi password protected, or do you have to log in to a webpage with a password to reach the WiFi? In general, the Arc should be able to connect to the former, but not the latter. 

Flashing green, as indicated in the LED states FAQ, means the Arc is ready to set up. 

Have you tried another device than this S23? It sounds like (as a guess) that the issue is more about your S23 not connecting to the WiFi than your Arc.

Unfortunately ‘tried every suggestion’ isn’t really descriptive. In general, your S23 should be sending information for setup of the network to the Arc via BLE, and then once the Arc is connected to the WiFi with the appropriate SSID and password, the controller then communicates everything else over the WiFi connection. 

Have you tried a call Sonos Support directly to discuss it?

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Did you resolve the issue you had connecting the Arc previously? Are you still in the same apartment?

Aye you enought nearby to the Arc, I also have a S23 and it didn't gave me any problem yet, is your S23 updated?

Is this a landlord supplied WiFi for a multi-unit building? If so, this WiFi will isolate ARC from any phones using the WiFi. This type of WiFi allows clients to access the external Internet, but isolates house clients from each other.

The quick solution is to install a travel router. The travel router will present a single WiFi client to the house side and will service multiple clients on your side. Your side will have a private SSID and password.

My phone connects to wifi with ease. And, wifi is protected. So wifi access isn’t via a web site logon. I decided to, once again, uninstall the Sonos app and reinstall. Problem solved.

The apartment complex I live in comprises about 1700 units. Each apartment has its own access point ceiling mounted. The entire wifi infrastructure was replaced a few months ago and what used to include 5 SSID’s was reduced to one. The multiple SSID’s kept the ARC from connecting because the Arc wanted to connect to the first SSID it came across. That SSID was protected and not available to residents. The “new” SSID works well.