There's a lot of excitement surrounding the iPhone 6 and iPhone 6 Plus. While it's easy to focus on their size, the new iPhones are also exciting to explore because of the promise of iOS 8. Apple has always done well in getting their hardware and software to play nice with each other and the iPhone 6 and iPhone 6 Plus reflect just that.

While the new iPhones show what great software can do, they were also first in line to experience kinks. In particular,  iOS 8.0.1 meant to fix the problems of the first version even made the problems worse. iPhone 6 and iPhone 6 Plus users who have updated to the latest version of iOS reported that they lost Touch ID functionality and cellular service.

Apple has rolled out iOS 8..0.2 to fix issues that rendered the iPhone 6 useless.

Some opt to just revert back to iOS 8 for the  meantime. How can users do that? 

The latest version of iTunes will be needed. Users who have not updated to the latest version can easily do so by downloading a copy online.

Once the latest version of iTunes is in place, simply connect it to the iPhone 6 or iPhone 6 Plus.

This will initialize the backup process. Take time to back up all files to your PC or Mac to ensure all data will be preserved. Backups on iCloud will not be able to restore to earlier versions and this includes iOS 8.0.

With files backed up, users can now proceed and download a file from Apple that corresponds to their device. An iPhone 6 will require a different file from the iPhone 6 Plus. Downloads are labeled anyway so users shouldn't have trouble picking out what they need.

Use iTunes to access the downloaded file. For Windows PCs, press the Shift key and click on "Check for Update." For Macs, press the Option key and click on "Check for Update."

Afterwards, press Update to begin reinstalling iOS 8.0 on an iPhone 6 or iPhone 6 Plus.

Let the installation finish and it's done! Touch ID functionality and cellular service should be back.

For users who don't want to reinstall iOS 8.0, iOS 8.0.2 is available .

Health app users, take note. The app will not work after reinstalling iOS 8.0. It will, however, regain functionality after the iOS 8.0.2 update is applied. This concern may extend to third-party apps that received updates through iOS 8.0.1.

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