The best ways to sell or trade in your old iPhone for 2021

By CNET
Super-easy to use
"BuybackBoss"
Lightning-fast quotes
"Decluttr"
Top dollar for your phone
"GadgetGone"
Straight-up Apple Store credit
"Apple"
Trade for a store gift card
"Best Buy"
Good if you want cash, bad if you're risk-averse
"Craigslist"
Also good for cash, and with a bit more seller protection
"Facebook Marketplace"
Safe for buyers and sellers alike, but be prepared for fees
"eBay"