Microsoft Lumia 640 5″ No-Contract SmartPhone (AT&T) for $29.99. Order online for in-store pickup at Best Buy to lock in the price and save on shipping. Otherwise, shipping is free on orders over $35. Here is a screenshot for reference. Alternatively, it is available at Walmart for $29.99 with in-store pickup. It features a 5″ touchscreen IPS display at 1280 x 720 resolution, Qualcomm MSM8926 Snapdragon 400 quad-core CPU at 1.2GHz, 1GB RAM, 8GB storage, 0.9MP front & 8MP rear-facing cameras with LED flash, 1080p video capture, Bluetooth 4.0, Wi-Fi connectivity, 4G LTE speed, microSDXC card slot, and Windows Phone 8.1. It is worth noting that you can unlock this phone (as well as many other AT&T phones) through AT&T’s own Unlock Portal here.