As iPhone 5 nears , resell market for current models increases . Sites like Gazelle , Nextworth offer up to $ 100 for used iPhone 4s . There 's always eBay , Craigslist , etc . -- it can be better , but it takes more work . The company , which also has trade-in programs at some retail stores , bills itself as a way to get value out of your aging electronics while keeping the products out of landfills , where they can cause environmental problems . Worst case , you can always make your current phone an iPod and Hi - Fi compatible device .
As iPhone 5 nears , resell market for current models increases . Sites like Gazelle , Nextworth offer up to $ 100 for used iPhone 4s . There 's always eBay , Craigslist , etc . -- it can be better , but it takes more work . Worst case , you can always make your current phone an iPod and Hi - Fi compatible device .