Exactly a week ago, Sony unveiled the Xperia Z4, their next flagship Android smartphone. Announced only for Japan, the Xperia Z4 takes what’s good about the Z3 and improves upon it instead of reinventing the wheel. That means a slimmer design, more powerful processor, and a much-improved front-facing camera.

So how do the two phones stack up against each other? Luckily for us, somebody had the same question in mind and decided to literally stack the Xperia Z3 and Xperia Z4 to find out. After the jump, a series of pictures that compare the two phones await you.

Discuss:

What do you think about the Xperia Z4 design?

[Via ASCII]