What is split screen on the Galaxy S9
The split screen feature on the Samsung Galaxy S9 lets you run two apps side by side, sharing the screen vertically. This is helpful for multitasking, such as messaging while browsing, taking notes while watching a video, or using a reference app alongside your main task. Understanding the requirements and limitations helps you decide when and how to use the feature effectively.
Why use split screen on the Galaxy S9
Split screen is designed to improve productivity and reduce the need to switch between apps constantly. On the Galaxy S9, it is particularly useful for comparing information, copying details from one app to another, or consuming media while interacting with another app. Although the screen is smaller on each side, the feature is stable and well integrated into Android 8.x with Samsung’s One UI.
How to check if your Galaxy S9 supports split screen
Device and software requirements
The split screen feature requires the device to run Android 7.0 Nougat or higher and have sufficient RAM and display space. On the Galaxy S9, the hardware and software meet these requirements when the phone is updated to the latest supported software.
- Operating system: Android 8.1 (Oreo) or later with One UI
- Storage: Sufficient free space for the apps you want to use
- Screen: Standard Super AMOLED display on the S9
How to enable and use split screen on Galaxy S9
Step by step guide
You can activate split screen directly from recent apps. This method works for most standard apps that support splitting. Note that not every app is optimized for side by side use, and some may open full screen or fail to split.
- Open the app you want to use first and bring it to the foreground.
- Tap the recent apps button (usually a square or three vertical lines).
- Long press on the second app you want to open beside the first.
- Tap the split icon or drag the app into the top half of the screen.
- Adjust the divider to balance space between the two apps.
Alternative methods
If the recent apps method does not produce split view, you can also try opening the overview mode and dragging an app into the upper or lower half. Some launcher variations or third party home screens may alter the steps slightly, but the core flow is consistent across most Galaxy S9 devices.
App compatibility and limitations
While many first party and popular third party apps support split screen, others may not. Some apps restrict themselves to full screen for security, licensing, or user experience reasons. If an app does not support split screen, it will open full screen when you attempt to open it in the split area.
The size of each app window is smaller than when running full screen, which can affect readability, video playback, or detailed editing. For best results, use apps that are designed for productivity, reference, or communication rather than immersive media.
Practical tips for better multitasking
- Choose apps with compact interfaces for usable space on each side.
- Use landscape orientation on supported apps for more horizontal space.
- Keep one app simple, such as a messaging client, and the other as your primary tool.
- Adjust the divider frequently to match your current task.
- Close unused apps in the background to preserve memory and battery.
Performance considerations and troubleshooting
When split screen may underperform
Running two apps simultaneously increases demand on the processor, memory, and battery. On the Galaxy S9, heavy apps such as games or extensive video editors may cause slowdowns or prevent splitting. If you notice lag, try reducing screen brightness, closing background apps, or restarting the device.
Common issues and fixes
- App opens full screen: Try a different app or check if the app supports split screen.
- Divider is unresponsive: Restart the phone or update apps and system software.
- Uneven space: Drag the divider to resize windows for better usability.
Comparison with other Galaxy S9 multitasking features
The Galaxy S9 offers several ways to manage multiple tasks, including split screen, pop up view, and side by side notifications. Each method serves different use cases and app types. Understanding these options helps you choose the right approach for your workflow.
Feature comparison table
| Feature | Split Screen | Pop Up View | Side by Side Notifications |
|---|---|---|---|
| Display type | Two apps, full height | Floating window | Collapsed view, alerts only |
| Best for | Active multitasking | Quick replies, small tasks | Staying informed without opening apps |
| App restrictions | Some apps may not split | Limited to supported apps | Most notification capable apps |
| Screen space usage | 50/50 by default | Floating, resizable | Minimal, temporary |
Privacy and security notes
Split screen may display notifications or sensitive information on both sides of the screen. Be mindful of your surroundings when using split screen in public. You can manage notification visibility in settings or disable sensitive content on locked screens to reduce the risk of accidental exposure.
Updates and long term usability
The Galaxy S9 remains capable for everyday tasks, and split screen continues to work through software updates. As apps evolve, some may change their behavior or compatibility. Keeping your device updated ensures you retain access to the latest features, security patches, and performance improvements for split screen and other multitasking tools.
Summary
Split screen on the Samsung Galaxy S9 is a dependable way to improve multitasking by running two apps side by side. It is straightforward to enable, works with many standard apps, and performs well for productivity and reference use cases. By understanding compatibility, performance limits, and best practices, you can use this feature consistently across daily routines on your device.