The password function is useful in preventing your iPhone from getting stolen and keeping privacy--until you forget your password, that is. After several incorrect guesses, the iPhone will automatically disable itself for a short period of time. Plugging it into iTunes has the same problem since it asks you to type your four-digit password into your phone. Fortunately, there is a solution: setting the iPhone back to factory settings.
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Turn the iPhone off.
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Plug the USB cable into your computer.
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Press the "Home" button on the iPhone while you connect the other end of the USB cable to the iPhone.
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Press the "Home" button down until the iPhone's screen shows a USB cable and an arrow pointing to the iTunes logo.
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Open iTunes. A box will appear, telling you it is in "recovery mode." Click "OK."
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Click "Restore and Update." Then click "I Agree" when the license agreement appears. ITunes will then restore your iPhone to its original factory settings.
