Step 1. Open the youtube site.
Step 2. Search for video of your choice.
Now here, the trick starts
Step 3. Go to the Url(universal resource locator) bar.
Step 4. Replace www. with m.
(eg :- www.abcdef.com ==> m.abcdef.com)
Now, Open the video..and you will be asked to open any media player(choose any 3gp supported player you have).
Now you can watch videos without buffering
Note : The video quality will be poor as compared to original video because of 3gp extensions.