The Samsung Galaxy Ace 2 and Galaxy Mini 2 have been officially announced by Samsung ahead of MWC 2012 in Barcelona.Building on the success of the original Galaxy Ace the Galaxy Ace 2 will feature a bigger 3.8-inch display with a higher 480 x 800 resolution.The Galaxy Ace 2 will ship running Android 2.3 (Gingerbread) on a beefed up 800MHz dual-core processor and 768MB of RAM.