unable to login as system owner, white screen when trying IOS

Have you rebooted your iPhone? 

If you have not done a reboot in a long time, maybe give that a try?

Additionally, there was an update that was supposedly released to fix at least one type of this issue. Have you updated?

Hi ​@Elmoxx 

Welcome back to the Sonos Community!

I am sorry to hear of this issue you are having with signing in to the Sonos app.

If the above advice does not help you, 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.

Thank you all for thinking along. 
None of the above did help so i will contact technical support.

Found the solution!
The issue was caused by the browsersetting to not execute JavaScript.

Moderator edit: changed JS to JavaScript for clarity

Hi ​@Elmoxx 

Fantastic - thanks for updating the thread!

Great follow-up and answer by ​@Elmoxx !!

However, I wonder how many users with the same issue may be using the Chrome browser rather than the native Safari browser. 🤔

Hello - I am having the very same issue, not able to log in to my system on the app, 14Pro, iOS 18.3.1, with the Sonos app uninstalled, re-installed, and re-set - multiple times, and have confirmed I am on the same wifi that my system is on. The only thing I can do with the phone app is start/stop and adjust volume of whatever I’ve had selected from my Macbook Air app.

3 screenshots of trying… and it’s the exact same issue every single time. Trying refresh doesn’t do anything except bring up the same last screen.

What am I missing here? Some random setting elsewhere that I’m not aware of? I’m fairly tech savvy but clearly, I’m at a loss with this - Help would be appreciated…and thanks in advance.

​Hi ​@Corry P  - 

After digging around further, I discovered that my Safari JavaScript was indeed turned off in settings, turned that back on and now the app works 🙃

Thank you

Hi ​@MotoBella 

Glad to hear it! Thanks for updating the thread!

I have exactly the same problem. I checked on Safari and JavaScript is enabled.  Still can’t sign in

Moderator edit: removed picture containing email address

I’d suggest you call Sonos Support directly to discuss it.