BGR has learned that RadioShack will be offering a limited-time sale on all AT&T iPhone 4S and iPhone 4 models beginning Sunday, December 11th. The nationwide retailer will discount each iPhone 4 and 4S model by $29, and the iPhone 3GS will remain free on contract. AT&T’s iPhone 4 8GB and its older iPhone 4 16GB models will each be offered for $69.99 on contract, down from $99, and the carrier’s 32GB model will cost $169.99. BGR has confirmed with multiple RadioShack locations that both older iPhone 4 models are still in stock. Apple’s new iPhone 4S will be available starting at $169.99 for the 16GB AT&T model. The iPhone 4S 32GB will cost $269.99 during the sale and the 64GB model will be discounted to $369.99. All sale pricing requires a new 2-year service contract. It is unclear how long RadioShack’s sale on all AT&T iPhone models will run, and a company spokesperson did not immediately respond to a request for comment.

Zach Epstein has worked in and around ICT for more than 15 years, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications in the US and around the world. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.