Apple has recently added the iPhone 4S to its list of items it will accept (and pay) for reuse and recycling, sure to fuel further speculation that a next-generation iPhone is on the way soon. The service, which in the US is partnered with PowerOn, pays up to $345 for a good-condition, working 64GB iPhone 4S model. Users receive payment in the form of an Apple gift card, and Apple will either recondition the item for resale as used or refurbished, or break it down for parts.