It is very great mobile with hd cam clarity with 41mp cam.in windows no need to bother about ram it is having 2gb ram.its 4g mobile it dont accapt jio.most lumia have gorilla glasses.its battery back up is good i.e, 1020 mah. lumia having many interesting options as here maps offline. cortana is offline also lumia 1020 never hangs. I personally recommend this mobile. : )