I'm in the United States it has been rolled out to all carriers. I have the Galaxy S10+ on the Verizon network and it doesn't work for me either. After some research, it appears that it works for all other brands of phones using Android 10 EXCEPT SAMSUNG branded phones. They're blaming the new UI 2 that Samsung packed in with the Android 10 update. If any of you got it working let me know. I've tried disabling and reenabling developer options, I've tried turning off dark mode and I've restarted it several times. Nothing works.
Samsung needs to fix this for sure, it's the only reason I went ahead and did the update.
I came from a Pixel 1, and the more I use my S10e the more I hate it.
The UI is so bad and the things that make the phone smart is all gone. Also the battery is a huge disappointment.