AT&T offers the factory-refurbished Nokia Lumia 520 4G 8GB Windows Prepaid Smartphone for AT&T GoPhone for $35.99 with free shipping. That's $4 under our May refurb mention and the lowest total price we've seen for this phone. (It's a current price low by $13.) It features a 4" 800x480 IPS touchscreen LCD, Qualcomm Snapdragon 1GHz dual-core processor, 512MB RAM, 8GB internal memory, 5-megapixel rear camera, microSD, micro USB, Bluetooth 4.0, and Windows Phone 8 OS. A 90-day AT&T warranty applies.