BlackBerry 7100g OS: BlackBerry; Dimensions: 4.60 x 2.30 x 0.80 inches (117 x 59 x 21 mm); Weight: 4.20 oz (120 g)the average is 4.8 oz (138 g); Design features: Full keyboard; Resolution: 240 x 260 pixels; Technology: LCD; Colors: 65 536; System memory: 4 MB ...