Split-screen mode is always useful, as it lets you open two tabs at once on your device, whether you need two documents open on your iPad Pro 11 or two social media accounts running on your iPhone 11.
However, if you don't know how to start split-screen mode, you're out of luck, as iOS doesn't give you many pointers, and you could miss this useful function altogether.
So to save you some hassle, follow this simple guide on how to start split-screen mode on an iPhone or iPad. We've updated the article to reflect changes made by iPadOS, the new iPad-specific operating system, but in practise there's very little different in how you enable split-screen mode.
We've used an iPad Pro 12.9 (2018) for this guide, but the steps work for iPhones too – you just need to enable the mode under 'Settings', 'Display and Brightness', 'Display Zoom', 'Zoom', 'Set', then 'Use Zoom'.
How to set up split-screen mode on iPhone or iPad
1. Find your second app
To split your screen on iOS, you actually have to start by finding your second app, and opening it. Now close it again – all you needed to do was open it briefly, so it appears in your toolbar at the bottom of the screen.
2. Open your main app
Now open the main app you want to split screens with – if you don't want the apps you're splitting the screen between to have equal sizes, choose the one that will take up the majority of screen space as this.
Next, swipe up from the bottom to bring up the toolbar, with your pinned apps and also your most recent ones – this is why you opened the other app, as it should be on this bar.
3. Drag and drop the second app
Press and hold down on this second app, and then drag it up off the toolbar. When you hover it over the first app, it should become a long thin rectangular box as shown below – drag this to the left or right side of the screen, whichever side you want the second app on, and release to open it there.
If, when you pick up and drag the second app, it's in a second box, this unfortunately means the app doesn't support split-screen mode, so you're out of luck.
How to re-arrange split-screen mode on iPad
On iPad you've now got one big app taking up most of the screen, and another sitting in a slice on the side – this might not be what you're looking for, but you can rearrange things in a few ways.
1. Hide and bring back the pop-up tab
If you want to hide this second app, you can simply touch the grey bar at the top of it and drag it to the side of the screen, which will cause the app to disappear off to the side.
Then, if you want to bring it back, you can easily swipe in from this side and it will pop back up.
2. Open 'true' split-screen mode
The second tab now sits in front the first, but you can truly split the screen between the two tabs if you want.
Press and hold the grey bar at the top of the second tab, and drag it down (or up). Both tabs will blur over, but when you release they'll be sitting side-by side, so no text is obscured in either.
To reverse this, just do the same procedure again, and the second app will hover above the main one again, so you can easily swipe it away.
3. Equalize the apps
If you want the second app to be bigger, you can easily drag the bar between them to the half-way line in the screen, or even further. The apps can only ever be a 50:50 or 25:75 split so you can't go crazy, but it's still useful if you're dashing between them.
- Want more apps to use split-screen with? These are the best iPad apps