New Android Pie features on a Samsung mobile device

The major changes of One UI and Android Pie are as follows:

One UI
- Content, settings, and other information have been reorganised to keep you focused on the task at hand
- Interactive elements have been moved to the bottom of the screen so they're always within reach
- New designs and features such as Night mode help keep your eyes comfortable

Notifications
- You can reply to messages directly in the notification panel
- Image thumbnails are included in message notifications
- In an App's notification settings, tap the switch once to turn on or off all the notifications in a category
 

Samsung Keyboard
- New Unicode 11.0 emojis are available
- New adaptive theme changes your keyboard look based on the colours of the surrounding App
- The floating keyboard is available in all Apps and has a new size and transparency settings
- You can set a custom touch and hold delay

Device care (formerly Device maintenance)
- Performance modes are streamlined and integrated into power saving modes
- The Edge panel for device maintenance is discontinued

Always On Display
- New clock styles have been added, including the option to show a calendar with your schedule
- Charging information has been added to let you know how much time is remaining until fully charged
- You can show Always On Display whenever the screen is off, or you can set it to show for 30 seconds when you tap the screen

Settings
- Menus have been reorganized to make settings easier to find
 

Samsung DeX 
- Continue using your phone while DeX is being displayed on a monitor or TV
- Use Samsung DeX with supported HDMI adapters. No need for a DeX Station

Bixby
- Bixby is all new, with a range of improvements and new features
- Swipe left from the main Bixby screen to explore the latest features and supported Apps
- You can control the Bixby key in settings to decide what happens when you press or double press

Phone
- You can now sort your call history by incoming and outgoing calls
- Your call history can include up to 2000 entries (increased from 500 entries)

Contacts
- The new drawer menu makes it easier to manage contacts from various accounts

Camera
- The new Scene optimizer automatically enhances the camera's colour settings to fit the scene.

Gallery
- Photo Editor Pro's editing tools have been added to Gallery, so you can make all your edits and touchups without leaving the App

My Files
- The new storage analysis tool has been added to help you monitor your storage usage and save space
- You can now show or hide items on the My Files Home screen
 

Samsung Health
- Your daily step count will be shown in the notification panel. To hide it, press and hold the notification, then turn off Current steps
 

Other improvements and changes
- Turn on the screen automatically whenever you pick up your phone using the Lift to Wake feature
- Access Kids Home on the quick panel
- Call stickers have been discontinued
- HEIF images are now supported

Eligible Models
- Galaxy A7 2018 (August 2019)
- Galaxy J7 Duo (September 2019)
- Galaxy Xcover4 (September 2019)
- Galaxy J3 2017 (September 2019)
- Galaxy Tab S3 9.7 (September 2019)
- Galaxy Tab A 2017 (September 2019)

Updated Completed:
- Galaxy S9 (January 2019)
- Galaxy S9+ (January 2019)
- Galaxy Note9 (February 2019)
- Galaxy Note8 (March 2019)
- Galaxy S8 (March 2019)
- Galaxy S8+ (March 2019)
- Galaxy J6 (April 2019)
- Galaxy Tab S4 10.5 (May 2019)
- Galaxy A8 2018 (May 2019)
- Galaxy A8+ 2018 (May 2019)
- Galaxy A9 2018 (July 2019)
- Galaxy J4 (July 2019)
- Galaxy J4+ (July 2019)
- Galaxy J6+ (July 2019)
- Galaxy A8 Star (July 2019)
- Galaxy J7 Pro (July 2019)
- Galaxy Tab A 10.5 (July 2019)
- Galaxy Tab Active2 (July 2019)