Mi 4i is the phone by whose sales only company has come up it was the best phone when launched but its market was made fall by self decision by launching redmi note 3 with more features at lower price but yes this phone is slim phone with perfect size which an comfort smartphone must have and have good quality of wide angles with best camera performance one thing which makes this phone down is that no external support to increase the memory but yes the otg is supported which makes this phone perfect and comfortable and also sexy if the person who wants design with good features and medium sized phone than its the best choice otherwise not