A new smartphone sales growth forecast three years suggests that screen sizes on these devices will continue to grow until the phablet form factor is the norm. This is inevitable, I think, and it matches my expectations.
As you may know, I often discuss what I call the smartphone "sweet spot," which is a rough measure of the ideal display size. For a few years, it seemed like the 5-inch display size was the sweet spot for most. But with the emergence of mainstream phablets and years of experience with larger devices, I've been revising that measure over time.