Samsung Galaxy A3 (SM-A300) revealed in User Agent profile
It seems that there are two Galaxy Alpha siblings in the works - the Galaxy A5 and now the Galaxy A3 (aka SM-A300). This one packs a 64-bit processor but curiously is close to low-end in most of its specs. A GFX Bench info page reveals a 4.8" screen with qHD resolution (540 x 960 pixels) and two cameras - 8MP on the back, 5MP on the front, both capable of 1080p video. The handset runs Android