AT&T Wireless offers the factory-refurbished Microsoft Lumia 640 4G LTE No-Contract Windows Phone 8 for AT&T GoPhone
with free shipping
. That's $7 under our March mention of a new one and $39 under the lowest total price we could find for a new model today. It features a 5" 1280x720 IPS touchscreen LCD, Qualcomm MSM8926 Snapdragon 400 1.2GHz quad-core processor, 1GB RAM, 8GB internal memory, front and rear cameras, 1080p video capture, Bluetooth 4.0, 4G LTE, 802.11n wireless, microSDXC card slot, and Windows Phone 8.1 OS with Lumia Denim. A 90-day AT&T warranty applies.