Here are some key features of Redmi Note 4:
Metal unibody design with chamfered edges
2.5D glass
5.5-inch full-HD display
MediaTek 10-core Helio X20 processor, max 2.1GHz
4100mAh battery for all day use
4G dual SIM, hybrid slot (expandable up to 128GB)
13MP f/2.0 main camera with PDAF for fast focusing
Ultra-fast fingerprint sensor
MIUI 8

Metal unibody design with chamfered edges
2.5D glass
5.5-inch full-HD display
MediaTek 10-core Helio X20 processor, max 2.1GHz
4100mAh battery for all day use
4G dual SIM, hybrid slot (expandable up to 128GB)
13MP f/2.0 main camera with PDAF for fast focusing
Ultra-fast fingerprint sensor
MIUI 8

Today in China, Xiaomi launched Redmi Note 4, the successor to our highly popular Redmi Note 3. Redmi Note 4 features a metal unibody design, the powerful 10-core Helio X20 processor, a 4100mAh battery for all-day use, an ultra-fast fingerprint sensor and ships with the latest MIUI 8.
As of July 2016, Xiaomi has sold over 110 million Redmi smartphones globally since its first Redmi device in 2013. In India, Redmi Note 3 recently became the highest-shipped smartphone ever in the history of India’s online market in any given quarter, as per IDC.
Redmi Note 4 is priced at RMB 899 (16GB) and RMB 1199 (64GB), and goes on sale in China starting August 26. It will be available from Mi.com, Mi Home stores and through China Mobile’s online and offline channels. China Mobile is a close partner of Xiaomi, and said today that it is aiming to ship 30 million Xiaomi smartphones in the year.