Mobile Multitasking-iPhone
Apple's new iPad is being criticized for lacking the capacity to run multiple third party applications at once, but the company has a variety of options to pursue in addressing the issue.
The iPad's iPhone OS arbitrarily limits third party apps from running in the background after the user closes the app. But this isn't because the iPhone OS "can't multitask," as the iPhone OS uses the same preemptively multitasking Mach/BSD kernel as Apple's desktop Mac OS X.
The iPhone OS is constantly running system processes that listen to the mobile network for incoming calls and texts, it runs an iPod process for playing back music all the time, it watches for background notifications being sent to idle apps, and there's a variety of other things always going on. This is the definition of multitasking.
Multitasking in the operating systemhttp://www.appleinsider.com/articles/10/02/18/inside_apples_ipad_multitasking.html
I think iPhone does the most stuff day in day out without being problematic.
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