Here is a comparison between the Redmi 2 and the Redmi 1S to know what better features are available on the newer handse Lei Jun, founder and CEO of China's mobile company Xiaomi, shows the new features at a launch ceremony of Xiaomi Phone 4, in Beijing, July 22, 2014. China's Xiaomi unveiled on Tuesday its new flagship Mi 4 smartphone, aimed squarely at the premium handset market dominated by Apple Inc and Samsung Electronics Co Ltd. Design And Display According to GizmoChina , the Xiaomi Redmi 2's thickness is 9.2 mm and it weighs 132 g whereas the Redmi 1S's thickness is 9.9 mm and its weight is 158 g.