I have a S9+ and I've had it for 2 years and today I took it out of the case to clean out the case. And honestly it's crazy to think this is 9 plus is 2 years old and it's just like new, and then I noticed something Peeling on the bottom corner. 🤔 at first I was concerned because I try not to Abuse my devices but I'm not exactly gentle with them either. But then I realised it's still has the plastic cover around the edge of the device lol. 😂 It actually felt like I was unboxing it all ever again. But honestly I'm a little bit sad that Samsung is not going to give the S9's one more OS upgrade.
You're lucky that you're even getting One UI 2.5. My Note8 is only 6 months older than S9+ and is stuck with One UI 1.0
ya one U.I 1 was a good one. buttery smooth, version 2 was okay, just a few small changes from version 1.0. how ever going from version 2.0 to 2.1 some noticeable changes, but it has some glitches. I did a factory reset it certainly helped but there's still some glitches Once in a while still.