Apple will give you more money for your old iPhone if you trade it in for a new one. Specifically, Apple has upped the trade-in value of the iPhone 6/Plus, 6s/Plus, 7/Plus, and 8. For example, the iPhone 6 had a trade-in value of $75, but now has a value of $150. The iPhone 7 had a trade-in value of $175 and now has a value of $250. The trade has to be made through Apple when upgrading to an iPhone Xr ($749) or iPhone Xs ($999). The value will be applied as a refund toward the new phone or an Apple Store Gift Card. Phones ineligible for credit can be recycled. Apple said the improved trade-in values will be honored for a limited time.
Source: Phone Scoop – Latest News