One UI 2.1 for Samsung Galaxy S9, Galaxy S9+ now available - Android Community
Tech Mi News - Samsung Galaxy S9 and S9+ start receiving their One UI 2.1 update, The latest June 2020 security patch is included as well. What you need to know Samsung
Galaxy S9 and Note 9 will receive One UI 2.1 update - Gizchina.com
Download Samsung Galaxy S9 (Plus) One UI 2.1 Update
One UI 2.1 update for Samsung Galaxy S9 and Galaxy Note 9 reportedly under development - NotebookCheck.net News