Now that even Apple's Board Member Al Gore has indirectly indicatedthe launch of two new iPhones this October it is a good time to start looking at options to sell of your existing iPhone 4 (or your iPhone 3GS) if you plan to upgrade to a newer device.
While traditional sites like eBay and Amazon are definitely good options, you also have alternatives like Gazelle and NextWorth, which are portals dedicated to selling used electronic devices. If you're willing to take credit or gift cards instead of cash, Best Buy and GameStop offer sweet deals for your iPhone. Read on to know what are your best options:
