What is split screen on the Galaxy S9
Split screen on the Galaxy S9 lets you run two apps side by side, sharing the screen vertically. This is useful for quick reference, copying information, or using a companion app while you work in another. Not all apps support split screen, and performance can vary. This guide covers how to enable, enter, resize, switch, and leave split screen, plus practical tips and troubleshooting steps that remain relevant across Android versions up to the current software support for the device.
Enable and use split screen on Galaxy S9
To use split screen on your Galaxy S9, first make sure the feature is enabled, then open one app, open a second app from recent apps, and choose split screen. Once active, you can resize the panels and switch the active app. The steps below explain each action, from checking compatibility to exiting split screen, with tips for stable use.
Requirements and compatibility
Before using split screen, confirm your device and apps support it. Split screen typically requires Android 7.0 or later and at least 1.5 GB of free RAM. Some Samsung apps and select third-party apps may not support split screen. If a app refuses to open in split screen, try an alternative or check for updates.
Step by step instructions
Follow these steps to open split screen on your Galaxy S9:
- Open the first app you want to use in split screen.
- Open the Recent Apps list (swipe up and hold the home or recent apps button).
- Tap the app you want to pair in split screen.
- Select Split to activate side by side layout.
- Adjust the dividing line to resize each app panel.
- Tap an app to bring the keyboard and back to the active input area.
- Swipe up from the top of the screen to exit split screen or tap the close icon on a panel.
Adjusting the split
After split screen is active, drag the vertical divider to resize the two panels. One panel typically cannot be smaller than a minimum readable width; when it reaches that limit, further resizing will move the other panel out of view. Note that one app remains active and can use the foreground, while the other runs in the background.
Switch the active app
To switch which app is active in split screen, tap the bar at the top of the inactive panel. This brings forward that app and gives it keyboard and touch priority, while the previously active app moves to the background. Use this to type in the secondary app or to control media while referencing content in the main app.
Practical uses and app pairing suggestions
Common and durable use cases for split screen on the Galaxy S9 include messaging while browsing, taking notes while watching a video, or referencing email while writing a document. Good pairs are communication and productivity apps that you use together frequently. Avoid pairing apps that are both heavily resource dependent, as this can slow performance or cause one app to reload when switching.
Quick pairing ideas
- Messages and Chrome for quick lookups while replying.
- Email and Notes to draft replies with references visible.
- Maps and a music app for navigation with audio in the background.
Troubleshooting split screen on Galaxy S9
If split screen does not work, first check basic settings and device state. Restart the device, verify recent apps are enabled, and confirm no device is in demo or kiosk mode that blocks multi window. Test with different app combinations to rule out an individual app issue. If problems persist, check for software updates or reset app preferences as a next step.
Common issues and fixes
| Issue | Likely cause | Action |
|---|---|---|
| Split screen option missing | Recent apps disabled or system setting | Enable Recent apps in Buttons and gestures; check Multi window toggle |
| App won’t open in split screen | App not supported or outdated | Update app or choose a different app pair |
| Divider does not move | Touch interference or frozen UI | Restart device; recalibrate if needed, or wait a few seconds and retry |
| Performance slowdown | Low RAM or heavy apps | Close background apps; avoid pairing two heavy apps |
Software updates and long term relevance
As a legacy device, the Galaxy S9 no longer receives major Android version updates, but it remains capable of split screen through its last supported software and security patches. Features and menu paths may differ slightly depending on your current firmware and One UI version. The core mechanics of opening, resizing, and switching apps in split screen largely remain the same, making this a durable skill for multi-tasking on the device.