After indulging in metal frames on the Galaxy Alpha and Galaxy Note 4, the Korean manufacturer has decided to go all in. Both the A3 and A5 have an all metal unibody exterior - that means the backs on the devices are non-removable, which, along with the metal unibodies, are a first for an Android device from Samsung. The A3 and A5 are also the slimmest Samsung phones after the Galaxy Alpha. The A3 measures in at 6.9mm thin, while the A5 is even thinner at 6.7mm. In terms of hardware, there's not a lot to be impressed about. The Galaxy A3 and A5 feature 4.5-inch qHD and 5-inch HD Super AMOLED displays, a quad-core 1.2GHz processor, 1/2GB of RAM, 13/8-megapixel cameras, 16GB of expandable internal storage, LTE connectivity, and 1,900/2,300 mAh batteries. Both devices run on Android 4.4.4 KitKat, with an option to choose between four different themes, another feature that we haven't seen on any Samsung-made Android phone before.