Galaxy Note 10 XDA Forums
The phones of course launch with the latest version of Android Pie with Samsung’s One UI layered on top of it. Unlike the previous generation of Samsung phones, these don’t have a Bixby button. Instead, the power button is now moved to the left side of the phone under the volume rocker. This power button works as both a Bixby button and power button with the power menu moved to the Quick Settings panel. It does still have Bixby, though, and holding down on the power button will summon Bixby 2.0 to the front.