I have the same issue with my AT&T Bold. I wish we had a better YouTube solution, even the HQ videos on the mobile sight are crap compared to the iPhone or Android phones.
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I am a T-Mobile customer and My 9700 works on both wifi and 3g. Both are very fast and seem to work the same. The quality of youtube videos are not as good as they should be on a 600 dollar phone. I use vuclip alot because of that reason.
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