The Xiaomi Redmi 1S, code-named armani, is a smartphone released in May 2014, developed by the Chinese smartphone manufacturer Xiaomi Inc.. It is a part of the Redmi series of smartphones, and succeeded the Redmi 1. Visually similar to its predecessor, it comes with a 4.7-inch screen, a quad-core 1.6 GHz Cortex-A7 processor and runs Android version 4.3 (Jellybean), bundled with the proprietary MIUI v5 user interface.