Radio Shack stores is offering Apple iPhone 4 16GB Smartphone for AT&T Wireless for $149 and the 32GB version for $249 with activation of a new service agreement for a limited time. Sales tax is added where applicable. Deal expires December 11, 2010.

The iPhone 4 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, access to hundreds of thousand apps and much more.

Save even more if you trade in your old iPhone, up-to $75 for the iPhone 3G and up-to $125 for the 3GS.