RadioShack has just given us the heads up that it has begun a new iPhone promotion. Starting today, the electronics retailer will be offering the iPhone 5s and iPhone 5c for AT&T, Verizon and Sprint at its 'lowest in-store prices ever.'
Folks looking to snag a newer model iPhone on one of these carriers can pick up a 16GB 5s for $79.99 (with a two-year contract of course) or a 16GB 5c for $29.99. And if you trade in a working iPhone 4s, you could get either phone free...