buying-guides · 1 min read · Updated JUL 31, 2026
Used iPhone buyer's guide: unlock status, battery, and model years
Buy a used iPhone on eBay — verify carrier unlock, battery health, iOS support, and seller feedback before you commit.
The short answer
Verify unlock status, battery health, iOS support, and cosmetic grade before you compare prices.
Critical checks
| Item | Why |
|---|---|
| Carrier lock | Must match your carrier |
| Battery | Below 80% = service soon |
| Model year | iOS support window |
| IMEI | Blocked if stolen |
Condition grades
eBay condition grades — Like New vs Refurbished differ by seller.
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