Zopo color m4 mobile phone iam using this phone is worrest display quality is very very poor mp4 , hd videos not working phone version is very poor and hanging this phone battery is very poor or 3g mobile high budget mobile and bad look bad and poor camera and bad sd is not working and sarvece centers not avelibull this phone proseser is slow and ram is low speed is not working otg cable is not support and display is shadow is don’t buy it this mobile