This is false advertising from Apple. Their "push" functionality is not "push" at all. When setting this up, the server is not given any information whatsoever about your phone, so it can't possibly know where to push email to. All Apple has done is set the iPhone to poll way, way too often for updates such as new mail. This drops battery life tremendously. In my case, it dropped from 3 days to 8 hours. BlackBerry does use push, and that's why they require software on your PC or on a BlackBerry server.
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This is false advertising from Apple. Their "push" functionality is not "push" at all. When setting this up, the server is not given any information whatsoever about your phone, so it can't possibly know where to push email to. All Apple has done is set the iPhone to poll way, way too often for updates such as new mail. This drops battery life tremendously. In my case, it dropped from 3 days to 8 hours. BlackBerry does use push, and that's why they require software on your PC or on a BlackBerry server.