Samsung Galaxy S21 gets November 2023 security update in Europe - SamMobile
Carrier-locked Galaxy S21 getting One UI 4.1 update in the US - SamMobile
Samsung One UI 4 beta coming to Galaxy S21 in September; US eligibility confirmed - PhoneArena
Amazon.com: SAMSUNG Galaxy S21 Ultra 5G Factory Unlocked Android Cell Phone 128GB US Version Smartphone Pro-Grade Camera 8K Video 108MP High Res, Phantom Silver
Samsung Galaxy S21 series could get the One UI 4.1 update very soon
One UI - Wikipedia
Update: First official evidence] Samsung will release One UI 4.1 in February 2022 - Sammy Fans
Amazon.com: Samsung Galaxy S21 Ultra 5G, US Version, 256GB, Phantom Black - Unlocked (Renewed)
Samsung Galaxy S21 Ultra Official ONE UI 4.1 Update - YouTube
Samsung Galaxy S21 series may get One UI 4.1 by the end of February, according to Verizon rep - GSMArena.com news
One UI 4.1 2022 Official Update on the Galaxy S21 Ultra - Top 10 New Features! - YouTube
Galaxy S21 Ultra just won a global award for being the best smartphone - SamMobile
How to download and install One UI 4.1 (Android 12) on Samsung Galaxy S21 phones [Video] - Sammy Fans
Galaxy S21 Series - One UI 4.1 Update Is Here! - YouTube
Samsung's One UI 4.1 update brings S22's night portrait and Expert RAW to older phones - The Verge
One UI 4.1 Update Finally in South Africa. : r/S21Ultra