It is a great mobile phone under 7000 of mi . It is volte so we can use jio sim in it . It has 2D curved display of 5 inches which provides good experience . Mi offier three varietnt of redmi 4 . 2gb/16gb , 3gb/32gb and 4gb/64gb.
The processwr is 1.4ghz octa core with snapdragon 430 chipset . The design is pretty of uni body metal . 4100 mah battery gives great backup. It almost is 2 days for normal user. The camera is 13 mp and 5mp . The back 13 mp camera provides good experience in full light.
So I can say that it is best mobile phone under Rs. 7000. Thanks