Redmi 4 is best mobile . In 2017 there are many news of bursting of this mobile due to its battery but no there is no bursting because of changed battery . There are many resons why this mobile is succesfull it is because of its wonderful features and long battery life . Its camera is best it have 13mp rear facing camera nd 5MP front facing camera with lots of functions and filters . It also have fingure print sacaner opening lock. It is very cheap to buy .