When I first started researching this it appeared the iPhone and iPod Touch might not be able to run multiple processes, but I was starting to wonder how in the world could that be. This does not appear to be the case though and instead it appears that Apple has set forth some fairly strict guidelines to keep developers from developing applications that eat up tons of RAM by allowing them to run wild with background processes. The iPhone has 128MB of RAM thus it could be chopped down to nothing very quickly by multiple applications running at the same time.

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