![Samsung resumes rollout of stable One UI 4 based on Android 12 after fixing bugs - GSMArena.com news Samsung resumes rollout of stable One UI 4 based on Android 12 after fixing bugs - GSMArena.com news](https://fdn.gsmarena.com/imgroot/news/21/12/one-ui-4-rollout-restarts/inline/-1200w5/gsmarena_002.jpg)
Samsung resumes rollout of stable One UI 4 based on Android 12 after fixing bugs - GSMArena.com news
![Samsung One UI 4 Beta (Android 12) coming to the US for Galaxy S21 unlocked, T-Mobile and Sprint variants - Sammy Fans Samsung One UI 4 Beta (Android 12) coming to the US for Galaxy S21 unlocked, T-Mobile and Sprint variants - Sammy Fans](https://www.sammyfans.com/wp-content/uploads/2021/09/galaxy-s21-one-ui-4-beta-us-img.jpg)
Samsung One UI 4 Beta (Android 12) coming to the US for Galaxy S21 unlocked, T-Mobile and Sprint variants - Sammy Fans
![Samsung Galaxy S21 Ultra 5G Android 12 Beta Rollout Could be Right Around the Corner, Geekbench Listing Reveals - MySmartPrice Samsung Galaxy S21 Ultra 5G Android 12 Beta Rollout Could be Right Around the Corner, Geekbench Listing Reveals - MySmartPrice](https://assets.mspimages.in/wp-content/uploads/2021/08/Samsung-Galaxy-S21-Ultra-5G.jpg)
Samsung Galaxy S21 Ultra 5G Android 12 Beta Rollout Could be Right Around the Corner, Geekbench Listing Reveals - MySmartPrice
![One UI 4 beta (based on Android 12) will start testing on the Galaxy S21 series in September - GSMArena.com news One UI 4 beta (based on Android 12) will start testing on the Galaxy S21 series in September - GSMArena.com news](https://fdn.gsmarena.com/imgroot/news/21/08/samsung-oneui-4-beta-in-september/popup/-315/gsmarena_001.jpg)
One UI 4 beta (based on Android 12) will start testing on the Galaxy S21 series in September - GSMArena.com news
![Android 12 update for the US Galaxy S21 models brings refresh rate bug, Samsung working on a fix - PhoneArena Android 12 update for the US Galaxy S21 models brings refresh rate bug, Samsung working on a fix - PhoneArena](https://m-cdn.phonearena.com/images/article/136609-wide-two_1200/Android-12-update-for-the-US-Galaxy-S21-models-brings-refresh-rate-bug-Samsung-working-on-a-fix.jpg)