Oppooooooooooo.I think this product is bestest product you ever made.Perfect Selfieee taker and best audio amplifyier. I firmly use it really it work smoothly as compare to any other mobile.Also it after sales services is quiet fair . really my suggestion is that it price is quit high although it has good features but it price. Now leave that part the one bestest which I like is its stunning and cool look really love its look and also I am musicholic and music volume in your this handset is mindblowing. So good luck ., . Oppo F1s .The selfie king