If you're itching to get your hands on the new iPhone rumored to be coming next month but don't fancy shelling out a ton of money, Apple is willing to help you offset the cost through their Reuse and Recycling program. As of right now you can fetch up to $345 for a mint condition 64GB iPhone 4S.
Apple's program allows you to enter the model and condition of your iPhone in only a few short questions before giving you a final value. As of now, a 64GB iPhone 4S will get you the most cash but the other models are reasonably priced as well. A 32GB mint condition 4S will get you $330. The program doesn't seem to care what carrier or whether or not the phone is factory unlocked which is probably good news for most. While the values are higher for the iPhone 4S, Apple will also accept trade-ins on any Mac, iPhone, or iPad model. If you've got an iPhone 4, you'll take a bit of a hit as the highest value for a mint condition model is currently $185.
If you're okay with the value Apple gives you, you'll just have to wipe the phone and send in your iPhone complete with the power cord. After you've sent in your iPhone Apple will issue you an Apple Store gift card that you can put towards anything you'd like. For most of you, that'll probably be the new iPhone which iMore has heard should be announced and released this September.
If you're looking for an easy and reliable way to off your iPhone, this is probably the best route but it's worth noting that you can probably fetch much higher values on services such like Craigslist, eBay, or Gazelle.com. We've written guides in the past on how to sell your old iPhone for a good price that can help if you need to get top dollar for it before considering a new iPhone.
If you're okay with Apple's pricing, check out the link below to get your gear appraised. Come this Fall, what color and capacity iPhone will you be opting for?