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Just jailbroke my 3g and installed mywi. Loving it already and I really haven't used it. Thank God I didn't preorder the 3g and waste all that extra money on another 3G data plan!
 
you can use itether (only $5) on a jailbroken iPad.
works great. much better than mywi because mywi kills your battery, and costs $20.
 
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