What are the new features in Samsung One UI 4.0

Last Update date : Apr 27. 2026

One UI 4.0 (Android 12) brings improved privacy controls, customization, and usability features. You can monitor app access, personalize colors, and enjoy updated apps and widgets.

Privacy protection

ONE UI 4.0 comes with a highly strengthened Privacy feature. If you activate the Privacy setting, you can check which apps are using the Camera and Microphone in real time. Additionally, you can conveniently see detailed usage logs from the last 24 hours. From Settings, select Privacy, then enable Camera access and Microphone access.

Enable access to Camera and Microphone

If you swipe down with two fingers, you can navigate to Quick Settings. If you tap the green icon located above Quick Settings, you can conveniently see all apps that are currently using the Camera and Microphone.

Tap green icon to see apps using Camera and Microphone
Wallpaper and Style setting Wallpaper and Style setting

Step 1. Go to Settings and select Wallpaper and Style.

Galaxy device Color palette Galaxy device Color palette

Step 2. Select Color palette.

AI recommended Color palette from wallpaper AI recommended Color palette from wallpaper

Step 3. Choose a variety of color tones based on colors from your wallpaper.

Notes:
Your device suggests colors that match your wallpaper automatically.

Step 1. You can access the Home screen settings by pressing and holding anywhere on the Home screen.

Step 2. You can customize widgets by tapping the Widgets button on the bottom of the screenSelect or drag the widgets you would like to use to enable the feature.

Customize Widgets from Home screen settings

Notes:
Widgets are redesigned for easier access and better usability.

On ONE UI 4.0, you can use a variety of emojis, GIFs and stickers for free. Try using cute emojis and GIFs when chatting with a friend.

Upgraded emojis and GIFs on ONE UI 4.0 keyboard

New emojis and GIFs available on ONE UI 4.0

Notes:
More expressive options are available directly from the keyboard.

You can use the updated Camera app to quickly take high-quality pictures and videos. The user-friendly menu layout increases the user’s convenience and ease of use. The Zoom setting display has been changed from icons to numbers for easier understanding of the zoom magnification level.

ONE UI 3.1 Camera app ONE UI 3.1 Camera app

ONE UI 3.1 Camera app

ONE UI 4.0 Camera app ONE UI 4.0 Camera app

ONE UI 4.0 Camera app

Battery and device care Battery and device care

Step 1. Go to Settings and select Battery and device care.

Device care Diagnostics Device care Diagnostics

Step 2. Navigate to Diagnostics.

Diagnostics functions Diagnostics functions

Step 3. Choose the functions you would like to check.

Notes:
You can monitor and optimize your device more easily.

The PIP (Picture in Picture) feature is extremely useful when you want to watch videos while doing something else. From the Home screen, you can easily change the size and location of the PIP (Picture in Picture) screen.

Change size and location of videos with enhanced PIP

Set the size or location of the video by dragging any of its four corners outward to your desired settings.

Note: Device screenshots and menus may vary depending on the device model and software version.

How to use the Samsung Members app

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