Smartphone and tablets are the catalyst that will drive digital newspapers, magazines, and mobile TV adoption to soaring new heights by 2015 according to PricewaterhouseCoopers.

Looking at tablets and digital media alone, it is predicted that within the next four years US newspapers will expand paid digital circulation to 4.6 million (up from 1.5 million last year).

The number of people viewing mobile TV in the U.S. will grow to 52.5 million in 2015 from 17.6 million in 2010, PricewaterhouseCoopers predicted. Mobile-TV ad spending in the U.S. will grow to $1.4 billion in 2015 from $370 million last year.

Read more at MobileMarketingWatch.