Have you tried
http://yamgo.com/ ?
Lets me watch the matches whilst at work if I manage to angle my phone away from people
I've used it from the UK so I don't know what it's like from where you are. Uses a lot of data as you'd expect.
Cheers
Ian
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World Cup 2010 - Live scores & stats during matches; all scorers, teams, players, fixtures, groups, points, venues, & news ...all at your fingertips!