Find What's Unique About Your Favorite Phone

What makes Nokia Lumia 521 unique?

Here are 4 unique features & highlights of Nokia Lumia 521 :
1 The thinnest 4 Inch Nokia phone
2 The #2 thinnest 4 Inch Windows phone
3 The #2 lightest Nokia phone with Dual-Core processor
4 The #3 Nokia phone with Dual-Core processor