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Constant iPhone Updates
The iOS 4 update was a major update that coincided with the big release of the iPhone 4, but the iPhone's operating system is not a static entity. Instead, there are smaller iOS updates after the major releases that will continue to upgrade your iPhone's mobile software to fix bugs and include small new features. The iOS 4.0.2 update has just been released, which is the second small iOS update in the few months since the release of iOS 4. Here is a tutorial on how to update your iPhone to iOS 4.0.2 and what it will do for your smartphone.
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Updating to iOS 4.0.2
The likelihood is that when you plug in your iPhone to your computer to sync to iTunes your iTunes account will already be aware that the iOS 4.0.2 update is ready and will ask you if you want to update. If it does not do this you can select your iPhone from under the Devices heading in the left hand panel and then hit the Updates button in the Summary tab. Once you select that you will want to complete the iOS 4.0.2 update for your iPhone and you will be informed which devices will be able to take part in this iPhone update, which is the iPhone 4, iPhone 3Gs, iPhone 3G, and both the second and third generation iPod Touch's. The first generation iPhone cannot take part in the iOS 4.0.2 update, just as it could not take part in the iOS 4 and iOS 4.0.1 updates. Once you hit the Next button you will have to agree to the Software License Agreement from Apple, which is standard and in line with the license agreement that came along with the iOS 4 update. Once you do this the iOS 4.0.2 will start downloading automatically, and you can watch the download in the Downloads display from under the Store heading in the left hand iTunes panel. The iOS 4.0.2 update is about 378 MB, so you may have to wait a few moments for the download to finish. After this it will go through a software extraction process and begin backing up your iPhone. Your iPhone's touch screen will then black out as iTunes prepares it for the update. Your iPhone will restart and you will watch a progress bar on the touch screen as the iOS 4.0.2 update is installed on your iPhone. This should take several minutes as the installation process is not usually a quick one. Once the iPhone has been prepared for the update it will go fairly quickly and you will find iTunes informing you to make sure it stays plugged in, which you should do until it is obvious the process has finished. Once it is done with the process your iPhone will sync to iTunes again and it will have been completed.
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The iOS 4.0.2 is not a major update and is mainly released to fix glitches that have come with reading PDF files on the iPhone. This has been a common problem with the new iPhone operating system and the iOS 4.0.2 has been released to patch up this issue and allow for standard iPhone PDF functions to continue working. This minor fix was also the trend with iOS 4.0.1, so we can expect several more iOS updates in the next year.