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Apple ID is an authentication method used by Apple for iPhone, iPad, Mac and other Apple devices. Apple IDs contain the user's personal information and settings. When an Apple ID is used to log in to an Apple device, the device will automatically use the settings associated with the Apple ID.
Initial release on iPod Touch (2nd generation 8 GB) and iPod Touch (3rd generation). Version 3.1.1 on iPod Touch (3rd generation). Free for iPhone OS 3.0 users; $4.95 for iPod Touch users who stayed on iPhone OS 2.0. Improved Wi-Fi for iPhone 3G with Bluetooth turned on. Ask to Join Networks toggle is hidden unless Wi-Fi is on.