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Then, you simply scroll through the icons, find the one you wish to close, press and hold the icon, and then click the red circle with a dash–Apple’s visual representation of a delete symbol. If you want to close an app out of memory, however, all you do is double-tap the home button to bring up the multitasking bar, which pops up from the bottom of the home screen. With no app-management tool, users will have to trust iOS 4 to make the correct decisions about what’s available via multitasking. The Apple spokesperson I talked with declined to specify how much memory is involved, but he did confirm that the memory is dedicated system memory, and has nothing to do with the available storage space on the device. Apps will be purged from the suspended state if the phone runs out of memory. Similar to Android’s approach to multitasking, iOS 4 keeps track of which apps have been used more recently and which take up more memory than others.
MULTIDOCK ON IPHONE 4 FULL
Developers will need to tweak their apps to take full advantage of the new multitasking capabilities.

This was the case when I tried some apps on a demo iPhone 4 (including Photos and Safari), but my final assessment of how well this approach works will remain on hold until I can try an app such as AOL Instant Messenger. Most apps, Apple says, will remain in a suspended state these apps are frozen at where you last left off, and should resume instantly. And if you have another app on the screen instead, the TomTom app will run in the background and continue to provide audio directions. With the new multitasking capability, you’ll be able to talk on the phone or play music, and continue to see the map view and receive turn-by-turn visual directions. After you complete the phone call, the app automatically resumes your route and recalculates your position–but the lost time without directions puts you at risk of missing a turn. Currently, if you’re driving and the TomTom app is running, the application drops and closes when you accept a phone call. TomTom is the first GPS app maker to announce its support of iOS 4’s multitasking.
