Microsoft has a smartphone called the Nokia Lumia 520, one that they now have available to buy for $29. This is the Nokia Lumia 520, a device that we've reviewed more than once - once as the 520 and another time as the T-Mobile version (basically the same device) as the 521. Back then, it was cheap. Now it's staggeringly cheap. This device has a 5-megapixel camera at its back, 8GB of storage inside, and a 4-inch display. There's also a micro-SD card slot inside for if you'd like to expand your storage further.