Xiaomi red is note 4 is very useful phone. It has lion battery of 4000mgh. It longed for 12-13hour. It is capable with any set of computers, laptop, phone, etc.it support 32gb rom. It has 4gb ram. It’s price is rupees 12000but you can buy this product with some discount by shopping online. It has front and back camera. It has calculator to calculate.it support HD movie and mp4 song. It has good power backup. It support facebook, twitter, whatsaap and many more to chat with friends or family member. It is very useful for students also. Students can find any type question ’s answer from this mobile by the help of google.