The Sony Xperia Z1 f is the little brother smartphone to the Xperia Z1, Sony's 2013 flagship. It’s almost identical in terms of hardware, but comes in a much more compact size. Instead of a 5-inch display, the Z1 f was built with a screen size of 4.3 inches. For the time being, the Z1 f is sold exclusively on the Japanese market via the mobile operator NTT DoCoMo and it seems unlikely to come to the US and Europe. The Xperia Z1 f is available in four different colors: black, white, pink and yellow.