Samsung has released an infographic that compares the features of the Galaxy A7, Galaxy A5 and Galaxy A3. All three Galaxy A-series devices share a metal unibody design. Their screen sizes are in steps of 0.5", i.e. the Galaxy A7, A5 and A3 have 5.5", 5" and 4.5" displays respectively.

Of the three devices, the Galaxy A7 is the most powerful. It comes with an octa-core (Snapdragon 615 or Exynos 5430) chipset, whereas the other two devices have quad-core chips. Check out the cool infographic to learn more.