EXCEPT bugs and defects, Apple has limitations and restrictions to offer its customers.
When iOS 4.2 gets rolled out to iPad users sometime in the coming weeks, the button on the side that, until now, has prevented the screen from swapping between portrait and landscape will become a mute switch, just like it is on the iPhone. However, since this is clearly a software-managed control rather than being hard-wired, some users were hoping that this might be configurable somewhere in the settings.
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Apple doesn't allow modification of hardware controls, as the developers of Camera+ learned recently.
iTunes has already become a one-way gateway for iOS devices, despite continuous fraud and hijacked accounts which Apple supposedly doesn't care about. The 'cancer' of iTunes has now spread to yet another company mastering the art of copy-pasting -- Microsoft. They are using a similar model in their Windows 7 Phone devices.