The latest Mobility Index Report from Good Technology reveals that iOS increased its lead over Android in the enterprise market during the fourth quarter on the strength of the iPhone 6 and iPhone 6 Plus. iOS accounted for 73% of total activations during the three-month period ending December, up from 69% in the previous quarter and equal to the year-ago quarter.

Specifically, the iPhone 6 and iPhone 6 Plus made up 30% of all activations during the fourth quarter, with the iPhone 6 to iPhone 6 Plus split being 77% and 23% respectively. Android activations dropped from 29% during the third quarter to 25% in the fourth quarter, while both Windows Phone and all other mobile platforms each represented a 1% share of activations.