
iPhones hold their value better than any phone on earth. But "best resale" and "best value" are not the same thing — and this sheet shows exactly where the line is.
This breakdown covers 29 iPhones from 2019–2025, with real Swappa & BackMarket used prices, 6-year iOS support timelines, and cost-per-year-of-life analysis across every model from the iPhone 11 to the iPhone 17 Pro Max.
This guide is for you if you're looking to:
- Find the actual sweet spot in the iPhone used market (it's not where most people look)
- See which models give the most years of support for the least money
- Understand why the iPhone Pro is often the worst value per year in the entire lineup
- Know which iPhones you should buy, hold, and when to sell