Damager:
Correct! I wonder if it's catching the 2100 frequency? interesting results!
Hard to say at this point. The SGS has 850 + 900 for its GSM so SMS and voice calls shoudn't be a problem anyway - it'll be that darn data that will show whether or not the hack works to turn on 850 in the int'l SGS. According to the weberatti, there should be no chance. Something to do with filtering and antenna tuning to permit the high data throughput which won't allow the two frequencies to co-exist. Which is news to Apple, I'm sure, since the iP4 has 850 + 900 data on board.
Just goes to show how much disinformation there is on the web, and it gets worse with every passing second.
Oh well, hopefully we'll have results from 2 tests to draw conclusions from. Unless of course they're polar opposite results...

Waiting with bated breath.
Cheers,
R2D2