Although the split screen function of iPhone is not a traditional left and right split screen, it can achieve multi-tasking operations in various ways; 1. Confirm the device support, iPhone 6s and above and run iOS 14 or higher; 2. Use picture-in-picture mode to switch other apps while watching videos. The mode is to play videos and click full screen or slide to exit; 3. Slide Over to quickly switch the second app from the right edge through Slide Over; 4. iPhone 13 and newer models support "pre-stage dispatch" in iOS 16, combining multi-task management and picture-in-picture improvement.

It is actually not difficult to use the split screen function of the iPhone, but many people really don’t know how to operate it at the beginning. Especially for those who are used to single-tasks on their mobile phones, they will feel very fresh when they see that they can read web pages on their iPad for the first time. Although the iPhone has a smaller screen, it also provides similar functions on supported models, called "Picture in Picture" and "Sliding Expand". Although it is not the left and right split screen in the traditional sense, it can also meet the needs of multitasking.

1. Confirm that your iPhone supports split-screen function

First, you have to make sure that your device supports relevant functions. Strictly speaking, the iPhone does not currently have the full left and right split screen functions like the iPad, but iOS provides some alternatives:

• Picture-in-picture : Suitable for video playback (such as YouTube, Tencent Video, etc.), you can continue to watch while you are doing other things.
• Slide Over : Swipe to open a second app from the edge of the screen in supported apps (commonly used for messages, emails, etc.).
• Supported devices: iPhone 6s and above iOS 14 or higher (some functions require system update)

2. Use picture-in-picture mode to watch videos and do other things at the same time

This is one of the closest experiences to "split screen", which is suitable for watching videos while browsing WeChat or replying to emails.

The opening method is as follows:

• Play videos in Safari or supported apps;
• Click the full screen button or slide to exit the video interface;
• The video will automatically shrink into a floating window and continue to play;
• You can switch the app at will, and the video window will always float on the screen.

Note: Some apps (such as Bilibili) do not enable picture-in-picture by default, and permissions need to be manually enabled in the settings.

3. Quickly switch between two apps through Slide Over

Although two apps cannot be displayed side by side completely, iPhone supports sliding out a floating window from the right side of the screen to quickly view the content of another app:

Operation steps:

• Open the first app;
• Swipe a little bit from the right edge of the screen to the left to bring up the floating window of the second app;
• After letting go, you can click to enter this app;
• Slide from the right edge again to turn off or switch.

This feature is more powerful on the iPad, and it's more like a "quick switch" than a real split screen on the iPhone.

4. Use "pre-stage scheduling" to improve multi-task efficiency (iPadOS-like experience)

If you are using iPhone 13 or newer and upgraded to iOS 16 or higher, the system also adds the "pre-desk dispatch" function similar to iPad:

• It manages multiple tasks in the background;
• Some apps retain window status when switching;
• Using it in combination with picture-in-picture is a bit like a "pseudo-split screen" visually.

How to enable: Go to [Settings] > [Multi-task and Gestures] > Enable "Allow multiple apps".

Basically all this is it. The iPhone's "split screen" is more of an analog implementation, with the focus on flexible switching and parallel processing of tasks rather than real side-by-side. If you understand this, you won’t feel awkward to use it.

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