I used xperia e3 dual approxd two year. first year he work well but after one and half year he work to much slow every time hang and when I install any app and open showing me it’s not responding and mobile gonna hang.about camera. rear camera was good but front camera like vga camera. battery backup also not good when I used continueslly one or one and half hour battery gona down it was irritating for me because data service atomatically off. and ram 1 gb when I install app after complete installing I go first setting move that app in SD card after that I running that app. totally it’s was ok but not good in that price