I purched oppo a37 8nov.2016. this phone use on data network with charging it become very hot and back cover also hot . this cause back cover loose and it’s colour will light back side. this phone more hot back camera side. so I use net data always remove charger. and camera quality is too good.IT’S sound system and ringtone is very expensive. it’s 2gb ram fast process. it’s gold colour is very expensive. It’s gold colour and screen display is too good.it’s display is eye protectable.