Google released the version 2.1 of YouTube app, on the Android Market, so YouTube app updates aren't tied to Android OS releases. The app was rebuilt from the ground up to mirror the YouTube desktop experience and is fastest, most intuitive YouTube mobile app to date.
Here's what's new:
- In-page playback: you can read the video description, browse related, rate or flag videos without having to interrupt video playback.
- Post comments while the video is playing, just like desktop version
- Subscription updates: If you're signed into your account, you'll see all your subscription updates right on the home screen
To enter full-screen UI simply rotate the phone. The new player controls make it easier to seek within the video, and you can pause or resume the playback by just tapping on the screen.
YouTube app only works on devices running Android 2.2. To install it, search for 'YouTube' in Android Market. It also comes pre-installed on many upcoming Android 2.3 devices, such as the Nexus S.