: Sites like Back Market and Gazelle

specialize in tested, certified pre-owned devices that often include a limited warranty.

: Can be found for as low as $35 to $52 , but these require a plan with the specific carrier they are locked to (e.g., AT&T or Verizon). Critical Buying Tips iPhone 7 - still worth it? (2026)

You can find "SIM-free" or "Unlocked" models through several reputable third-party retailers: