In order from left to right, the Galaxy Ace is a 3.5-incher that most closely resembles the S team, but with an 800MHz processor and HVGA screen resolution. The Fit has a 3.3-inch QVGA screen and 600MHz speed. The Gio has HVGA Resolution. The Galaxy mini has a 3.1-inch QVGA display and 600MHz capabilities…..See Details. @TatWza