I really thank to Microsoft to lunch this product at this cost and its looking too good and in this black color is really awesome and the performance is too good cameras both front and back are really cool display superb and I dont find any draw backs with this phone selfie camera is cool there are 4 colors available black, white, blue, ash. it having 1 GB ram and 8 GB internal and also having cloud storage that is one drive. it comes with windows 8.1 and still we can upgrade it to windows 10 but after upgrade to windows 10 we are going get troubles like battery problems because of high effects so its my advise to keep this mobile in the windows 8.1 only if any one updated to windows 10 there is a chance to downgrade to windows 10 to again windows 8.1 so no problem with that