Sony's Xperia Z2 was close to being the first Android with no compromises. Its large display and fantastic camera combined with speed performance, durability and insane battery life to amazing effect. It's been Cam's favorite device virtually all year, and so he wanted to compare it to its successor to see what has improved and what's perhaps not as good.

Both phones feature a 5.2-inch, 1080x1920 display, 20.7MP camera, 3GB RAM, Snapdragon 801 series quad-core chip and larg