blackberry $30 storm data plan unlimited?

Is the blackberry storms $30 data plan unlimited ? If it is why then when I log onto youtube mobile it says ” youtube mobile is a data insensitive application. We highly recommend that you upgrade to an unlimited data plan with your mobile service provider to avoid additional charges”…. Is that just a precaution or do I really not have unlimited data?

no you only get 4 gig the $50 is unlimited for the blackberry data plan

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