Sales of the Surface Pro 4 and Surface Book led to a 29 percent increase in overall Surface family revenue ($1.35 billion compared to $1.1 billion), Microsoft announced in its Q2 2016 earnings report. Its overall phone revenue, however, fell 49 percent. Given our disappointment with the Lumia 950 and 950 XL, Microsoft's mobile performance wasn't too surprising. Its new devices weren't really flagship models meant to compete with the iPhone 6S and the best of Android. Microsoft's overall revenue for its More Personal Computing division (which includes Surface and phone sales) fell 5 percent.