The Core Prime is a KitKat phone. My guess is that it'll skip Android 5.0 and update straight to Android M.
The smaller screen size means that the phone is more portable than larger handsets.
Unlike Samsung's most recent handsets, this one keeps the company's traditional removable backplate and battery.
The Galaxy Core Prime has a 5-megapixel rear camera and a 2-megapixel front-facing camera.
Relatively unadorned, there's just the power/lock button on the right side and the volume rocker on the left.
The physical home key calls up Google Now when you press and hold.