One UI 6

[Evgeni]

Still not available for mine s23 ultra (usa version, using it in uk if that makes difference) no banner for update, or if someone know when the full version release is?

[BYDGuy]

If your device isn't SIM free and was given to you by a network like EE, 02 etc then they're not eligible for beta testing

[Pugs1957]

You'll have to wait until it rolls out in the US. Rumour has it we should get it next month.

[Newfoundland]

When you available Galaxy S23 Ultra One UI 6 in uk

[Evgeni]

It is SIM free

[Joeeye]

You need to use a US SIM, then see if the beta update is available. Be sure to restart the phone ofcourse.