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If you own a Galaxy S9 or Galaxy S9+, you should be able to download the One UI 2.5 update over the air by tapping the Download and install option inside the phone's Settings » Software update menu. You also have the option of downloading the latest firmware from our archive and flashing it on your phone using a Windows PC.
The biggest feature addition to the Galaxy S9 and S9+ with One UI 2.5 is support for wireless DeX. Once you've updated your phone, you will be able to run DeX wirelessly on any TV that supports screen mirroring and use the phone's display as a touchpad. Wireless DeX isn't as capable as wired DeX, but it works great for things like running presentations and using your TV as a second screen.
One UI 2.5 also brings you a smarter Samsung Keyboard with a YouTube search function and the ability to split it up for easier typing in landscape mode, along with enhanced camera functionality that includes the option to adjust recording duration in Single Take mode and select the resolution of videos captured in Pro video mode. In the Messages app, SOS messages can now be sent to a chosen contact every 30 minutes for 24 hours.
As mentioned above, One UI 2.5 is the final big feature update for the Galaxy S9 and Galaxy S9+. Both handsets will continue receiving regular security updates in the future but will not be making the jump to Android 11 or One UI 3.0. It's disappointing, yes, but that's just how it is for any Galaxy device launched before the Galaxy S10.
Abhijeet's writing career started with custom ROM guides for Samsung devices (including the original Galaxy S), and he moved to SamMobile in mid-2013 and worked up the ranks to Editor-in-chief. His first Samsung phone was the D500
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