This is a good mobile . it is a 4100mah battery is very good bakup. and ram 2GB and internal memori 16GB si bast Octa Core, Processor .and 2.5d glass leayer .and 13mp camera .The successor to Xiaomi’s Redmi 3s, the much awaited Redmi 4, is now official in India. The handset retails in three storage and RAM variants and the base model with 2GB RAM and 16GB storage .and non full hd dispaly .The Redmi 4 relies on the proven Redmi formula of a 5-inch 720p IPS display. The camera is in the top strip, joined by the flash. The camera module sticks out just a tiny bit, and the ring around the lens is slightly raised above the glass, so it should be safe. The Redmi 4 is equipped with a 13MP primary cam with phase detection autofocus and an f/2.0 aperture lens.