Here is how to how to sell your phone for the most money . You can You can estimate your trade-in value using the following links
Apple has a iPhone Trade-in program which allows you to give your eligible smartphone for a new iPhone of your choice. apple.com/iphone/trade-up
BuyBackWorld.com makes it easy to sell your used iPhones online for cash www.buybackworld.com
Amazon Trade-In Program lets you trade in iPhone or iPad ( you can also trade-in eligible textbooks, electronics, video games, DVDs, and more) for an Amazon.com Gift Card.
Trade-in Cell Phones and Electronics for Cash using Gazelle.com website
Trade in your qualifying cell phones, computers, video games and other electronics online or at a Best Buy store. You can estimate your trade-in value
Walmart Trade-In Program lets you trade in iPhone or iPad and electronics for cash
Nextworth offers buyback program for cell phones, iPods, tablets, computers, video game consoles and games.
Trade in your used consumer electronics for top value with Target’s trade-in program. targettrade-in.com/online/
SellMyCellPhones.com is a comparison site that will compare prices from different buyers for you.