I own have a lumia 520 after using nokia c5 03
Nokia lumai have a beeter touch sencer while using wearing the globes and the it its come with ambient light sencer the best part of windows phone it can not be hanged with 400 apps installed in the phone android phone does not support the many apps in the phone like the windows phone so the windows phone kill the background apps while nkt using in the phone
It have a better battery backup
Nice design and build quality
High sound quality in headphone and also in speaker
good camera
And the snapdradgon dual core processer is very fast