Apple Sibling Rivalry: iPad’s Toughest Competition in Q4 Was the iPhone [VIDEO]

Amazon’s Kindle Fire has certainly proved a strong contender in the tablet market, but the iPad is still winning in that arena. For Apple’s fourth quarter, though, the iPad’s stiffest competition was actually its sibling, the iPhone. In the last three months of 2011, Apple shipped 15.4 million iPads and iPad 2s, according to IHS. During that same period, Apple slipped from 64% of the global media market to 57%.