Between December 19 - 25, Apple devices accounted for 51% of all new device activations around the world. The iPhone 6+, Apple's first venture into the phablet market, was also among the Top 5 devices and contributed to the jump in popularity that phablets saw this year.
Phablet activations were up from 4% in 2013 to 13% in 2014, but this was at the expense of tablet activations, which dropped 35% in 2014 compared to 2013 numbers. Maybe manufacturers are having a hard time convincing consumers about the worth of a tablet versus a bigger phone.
Here's a chart, courtesy of Statista.