In a nutshell (as you can tell by the model number anyways, the Nokia Lumia 521 is a variation of the Nokia Lumia 520, where the latter has arrived in Europe as well as Asia for quite some time already. In fact, the Nokia Lumia 521 holds the distinction of being the most affordable Windows Phone 8 device to date, where T-Mobile is offering it for a mere $149.99. Alternatively, you can also opt to take the down payment route of just $29.99 a pop in addition to a $5 monthly fee – for a couple of years though. Just to refresh our memories, the Nokia Lumia 521 would come with a 4” IPS WVGA display, a 5-megapixel shooter at the back, 512MB RAM, a dual-core 1GHz processor, a 1,430 mAh battery, 8GB of internal memory, and a microSD memory card slot for expansion purposes.