Sony Xperia M4 is a very expensive device with less specification.I am using this device right now on future I am not gonna buy any Sony Smartphone.They are too Expensive with less features and specification and is not durable also get heated up while using some heavy apps and games .The battery life and Camera quality of this device is also below average. Also Sony uses Mediatek processor in it which is also too slow as compare yo the Snapdragon processors .And this device is Semi water resistant it’ll distroyed if water enterd in its speekar damages .I replaced it three times with Sony Care due to Speekar problem