Xiaomi Redmi Note 4 is best smart phone of current time . it’s sound quality is very good and it’s calling voice sound is clear. jio sim run fastest of this phone and it’s design and style are not so good but everage. and all the future are very good. only one problem that it’s back camera are not so good but front camera is good. best thing is it’s not a high price middle class person are easily buy this phone and it’s all futures are good.so I suggest you please take a phone and enjoy it.