The issue
Users of Apple iOS 6 were disappointed to find that the YouTube app is no longer pre-installed on there devices (iPhone 5, iPad 4, iPhone 4S, iPhone 4, iPhone 3GS, iPod touch 5, iPad 3, iPad 2). How comes this peculiar issue and how to fix it?
Reason
The issue is related to the increasingly sour relations with Google. Apple announced that they will not be including YouTube in their upcoming operating system release. This marks the first time since 2007, when the first version of the iPhone came out, that YouTube will not be included with the operating system.
The Fix – How to watch YouTube videos on iOS 6?
Solution 1: Install Google YouTube app for iOS 6 (Recommended)
Instead of having the Apple version of the YouTube app pre-loaded, Google offers its own version in the App Store starting from September 11, 2012. The YouTube App works for iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad that run with iOS 5 on the iTunes App Store
Solution 2: Use the third party YouTube app TubeBox in iOS 6
As one option, you can turn to the popular third party app TubeBox, a highly-reviewed replacement for the YouTube app, which also allows you to save YouTube videos to watch offline. This method will cost you $1.99.
Solution 3: Use the third party free YouTube app by Jasmine in iOS 6
Jasmine is free YouTube app with a very nice, clean and minimal design. It will meet all your expection for a YouTube app for iOS. The Jasmine YouTube App is compatible with iPhone, iPod touch and iPad. It especially works much better than Google YouTube App on iPad 4, iPad, iPad 3, iPad 2 with fixed look for iPad display.
Solution 3: Download YouTube videos on computer and convert YouTube to iOS devices (Recommended)
This solution enables to watch YouTube videos offline and without buffering. Some YouTube downloader allows batch downloading and batch converting to SD or high definition format for iOS 6 devices. You can Visit the Detailed Guide on how to Download and Convert YouTube Video to iPhone 5 or on any iOS 6 devices.
Solution 5: Watch YouTube in Safari browser in iOS 6
iOS 6 users can watch YouTube in Safari browser and add YouTube website to home screen. To “Add Website to Home Screen” enables you to have a YouTube button on our home screen again within a few seconds. This method is suggested by Apple in a statement. However, considering YouTube videos playback in Safari requires Adobe Flash Player to be installed, this method is not a workable solution at all.
With time goes on, we believe that there will be more YouTube app choices, free or paid and will equipped with more functions and features which will make iOS 6 users to watch YouTube videos easier, with high definition and even off line.