Multitasking might be the biggest news in the latest version of the iPhone OS, but it has plenty of other useful features and refinements, too. Here's a hands-on look at our 10 favourites.
Organise your apps in folders
Have lots and lots of apps? Folders are a great way to de-clutter your iPhone's home screens. To make a folder you just tap on an icon until it starts to jiggle, and then you drop that icon on top of another. The folder is named automatically with the type of applications you are grouping, but you can also rename each folder with any label you'd like (and change it again later, if you wish). Keep in mind, however, that you're limited to 12 applications per folder.
If an app within a folder has a notification to display, a badge shows up in the top-right corner of the folder to alert you. To open a folder, just tap on it; repeat that action to close it.
Make playlists in the iPod app
The old On-The-Go playlist in the iPod app was a legacy feature from the early iPod models, but in iOS 4 you can finally create and personalise playlists to your liking. You can either edit a current playlist by rearranging or adding/removing songs, or easily create a brand-new one from scratch by going into the playlist tab and tapping Add Playlist. From there, you can select songs from your entire library to add to your playlist.
You can also control the iPod app from anywhere in iOS 4 by double-tapping on the Home button and swiping right. Controls for play, next song, and previous song (as well as a shortcut to the iPod app) display on your screen.
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