Sprint is on a mission to offer the cheapest iPhone 4S in America. Last week, it was announced that the wireless carrier would be offering the current-gen iPhone with a $50 discount, bringing the price down to $150. Now we get word that Sprint will be giving customers who buy a 16GB iPhone 4S with a two-year contract a $100 American Express Reward Card, bringing the price down to $50. Crazy. 

Normally, we wouldn't recommend buying an iPhone so close to the release of a new model, but $50 is ridiculous cheap for such a great phone. 

[via Electronista]