Can't. It says not compatible. What I did is get xenxu something lilke that from app world. Just like the youtube app.. Just search youtube in app world. Enjoy
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Google has to update their site to register the phone properly. The APP IS COMPATIBLE! I had it and used it with OS 5 when I did the upgrade. Was stupid and forgot to back it up when I wiped the phone for a fresh install.
Yeah, the YouTube app definitely works. I reinstalled it from my backup.
That xenxu or whatever is a bigger Pile of you know what than the google app...lol! It's not user friendly, and when I loaded it I think it took 15 minutes for the video to start playing and the quality was no better than the google app.