By contrast, Jobs said, BlackBerry users rely on servers run by Research In Motion to shuttle information between corporate servers and BlackBerry users.

FORBES: IPhone Goes Corporate

Just 15% of people who use TV networks' websites or apps watch digital content synchronized to live TV, translating into just 3% of the overall TV audience aged 13 to 54, according to market-research firm GfK. Users more commonly watch on-demand video clips and look up schedule information.

WSJ: TV Networks Play to 'Second Screen'