With activation of new voice and data plans, AT&T Wireless offers the refurbished Apple iPhone 4 16GB Smartphone for AT&T Wireless in Black (pictured) or White for $49.99 with free shipping and free activation. (Search for “refurb iPhone 4 16GB” to find it.) That’s $49 under our August mention and the lowest total price we’ve seen for an iPhone 4. Sales tax is added where applicable. It features an Apple A4 processor, 326-ppi (pixel per inch) Retina 3.5″ display running at 960×640, gyroscope, front- and rear-facing cameras, 5-megapixel camera with LED flash, 720p video capture at 30 fps, 802.11n wireless networking, dual microphones, and more.