I have had used nokia lumia 520 for 1 and half yerars. Because the operating system is widows it is not user friendly. In Android phone share of media are very easily. But in widows sharing is very hard even tough today we have share it or other app. After 6 months it start showing problems often it get switch off and flight mode get on by itself. Then it starts to show no signal even you are in the full range region.widows it sucks so I recommend not to buy. Even it doesn’t available in the market