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HolidayBuyer's Guide

Multitasking

More mulitasking

Easy access to controls

Home screen folders

Naming folders

Unified in-box

Threaded e-mail search, step one

Threaded e-mail search, step two

Delete e-mails in search

Home screen backgrounds

Home or lock screen?

Camera zoom

Rotate photo

Image sorting

Geolocation of photos

Location Services menu

Spell check

Web search suggestions

Text message search

Universal search

Playlists

Birthday calendar

Game Center

That's all, folks

Editors' note: This slideshow has been updated with four new slides. The original publish date was April 9, 2010.

Multitasking is the biggest win from iOS 4. It's great to have this common smartphone feature, though we're disappointed it will come only to the iPhone 3GS (or later) and not the iPhone 3G.

To access the multitasking menu, double tap the Home button. You'll see a list of currently running applications that you can scroll through using a sideways finger swipe. You then open an application by tapping its icon.

Caption by / Photo by Screenshot by Kent German/CNET
To close a running application, first use a long press on the related icon. You'll then see a tiny delete icon in the top left corner.
Caption by / Photo by Screenshot by Kent German/CNET
Double-tap the home button to bring up the multitasking screen and scroll one screen to the left to access iPod controls. You also can lock the screen rotation from this screen or return to iTunes with a touch of your finger.
Caption by / Photo by Screenshot by Jason Parker/CNET
We also welcome the new ability to add home screen folders. To create a folder, just drag icons on top of each other. The folder will then appear as a square with tiny icons of the included app inside. Tap the the folder to open it.
Caption by / Photo by Screenshot by Kent German/CNET
You can change the default folder name if you wish. To remove apps from a folder, just drag the related icon back to the home screen.
Caption by / Photo by Screenshot by Kent German/CNET
We've long asked for a unified e-mail in-box, and now we have it. Alternatively, you can select in-boxes for individual accounts.
Caption by / Photo by Screenshot by Kent German/CNET
iOS 4 adds the ability to see e-mails by thread. To get started, select the gray double arrows next to a message.
Caption by / Photo by Screenshot by Kent German/CNET
You'll now see only those e-mails in the selected thread.
Caption by / Photo by Screenshot by Kent German/CNET
When searching your e-mails, you can delete messages directly from the search results.
Caption by / Photo by Screenshot by Kent German/CNET
The new OS lets you change the home screen background. The only trouble is you can't get back to the standard black background once you remove it.
Caption by / Photo by Screenshot by Kent German/CNET
When selecting a wallpaper, you can use it as the home screen background, the lock screen background, or both.
Caption by / Photo by Screenshot by Kent German/CNET
In the still camera you get a 5x digital zoom. Tap the display to access the feature.
Caption by / Photo by Screenshot by Kent German/CNET
In the photo gallery menu you can choose to rotate an image 90 degrees.
Caption by / Photo by Screenshot by Kent German/CNET
Find all the images that have a specific friend in them using the Faces sorting feature. You'll need to have already used the face recognition options in iPhoto or Aperture and synced with iTunes to use this feature.
Caption by / Photo by Screenshot by Jason Parker/CNET
The addition of Geolocations lets you view where you took your latest shots on a map and sort your images by location.
Caption by / Photo by Screenshot by Jason Parker/CNET
A new Location Services menu lets you decide which programs can use your location information and which ones can't.
Caption by / Photo by Screenshot by Jason Parker/CNET
Though the iPhone has long had an autocorrect feature, the new spell check feature will notify you of unrecognized or misspelled words with a red underline.
Caption by / Photo by Screenshot by Kent German/CNET
When typing a search term in the Safari browser you'll get Google suggestions along with your recent searches.
Caption by / Photo by Screenshot by Kent German/CNET
You can search text messages just as you've always been able to search your e-mail in-box.
Caption by / Photo by Screenshot by Kent German/CNET
When using the universal search feature you can access the Web and Wikipedia results for your search term.
Caption by / Photo by Screenshot by Kent German/CNET
In the iPod player, Apple added new playlist creation options.
Caption by / Photo by Screenshot by Kent German/CNET
If you can't remember birthdays, you'll like the birthday calendar.
Caption by / Photo by Screenshot by Kent German/CNET
The Game Center lets you connect with and challenge friends online. Create an account and enter custom text that will be seen by your friends.
Caption by / Photo by Screenshot by Jason Parker/CNET
Welcome to iOS 4!
Caption by / Photo by Screenshot by Kent German/CNET
Updated:
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