Hi guys I use nokia lumia 520 it is good phone 4inch display , 5mega pixel camera with 720p recordings no flash and 512mb ram and 1430 mah battery it is dual sim gsm/hspa annaunced nokia in 2013 february. ips lcd display multitouch support protection stratch resistance glass it’s running on windows 8.1 chipset is qualcomm snapdragan and dual core 1.0 ghz. micro sd card upto 64 gb expandadables. sensor is accelerometer and proximity sensor micro usb 2.0 also The nokia lumia 520 is good phone to buy.