Thanks to the leaks we were able to try out with the latest Android Pie beta version of the Galaxy S9, we already have a good idea of what the update will bring to Samsung's flagships. As you might expect, Android 9.0 includes a number of notable updates, such as the addition of a system-wide dark theme and a brand new TouchWiz replacement named "One UI"
Leakage was just the appetizer as Samsung today, on the 15th. November, with the official launch of Android Pie Beta for Galaxy devices has begun. However, the software update is only available for unlocked S9 models in Korea, Germany and the US USA, at least initially. It has just started to run in South Korea and the US beta program is finally live from 1
First, you need the Samsung + app. You can find it by using the Galaxy Apps app in the app tray to search for "Samsung +" or by tapping the link below and selecting "Galaxy Apps" in the "Complete Action" dialog box. Once you're on the Samsung + download page, tap "Install" to purchase the app.
Next, open the Samsung + app and log in Either with your Samsung account or your Google account (both credentials should already be stored on your phone). If the One UI beta program is available for your Galaxy S9 or S9 +, a small banner will appear in the center of the page. Just tap this banner and follow the instructions on the screen to sign up for the beta program.
If the pie beta registration prompt does not appear in the Samsung + app, it's probably a matter of time before it appears (assuming you have a supported Galaxy S9 variant, of course). Check the Samsung + app frequently, as there are only a limited number of slots in the beta program.
Once you've signed up for the beta, open your Settings app and select "Software Update." Tap on "Download updates manually" and wait a few seconds while the phone searches for the update. If it does not show up immediately, check it out in about five minutes.
When the update is found, it is automatically downloaded and installed. This process can take up to 30 minutes, so make sure you have a charger handy.
Remember, this is a beta version, so it can lead to errors. However, Samsung has been testing this firmware internally for a few months, it is quite stable. However, the build does not bypass SafetyNet, so you lose access to certain apps like Netflix and Pokémon GO. If that's too much for you, you know that in January 2019, Samsung will release Pie's final public build for beta-enabled phones.