Samsung has released three versions of One UI in about 10 months. If you own a Galaxy phone and are trying to make sense of what changed, what update your phone currently has, and what is coming next, this guide breaks it all down.
One UI 8 started rolling out in September 2025 and is now installed on hundreds of millions of Galaxy devices. One UI 8.5 first arrived on the Galaxy S26 series earlier in 2026 and began rolling out to older Galaxy phones on May 6, 2026. It is the biggest visual and AI upgrade Samsung has shipped in years. One UI 9 is still in beta as of May 2026.
Here is how all three compare.
Quick comparison: Samsung One UI 8 vs 8.5 vs 9
Use the table below to see the key differences at a glance, then scroll down for the full breakdown of each version.
