Tested & certified iPhone 15
A tested & certified iPhone 15 from £400 — fully tested and honestly graded. The same phone as new, for a fraction of the price.
1 iPhone 15 option in stock
Apple iPhone 15
Buying a pre-owned iPhone 15: what to know
Every iPhone 15 we sell is put through a full diagnostic — screen, cameras, speakers, charging, biometrics and battery — then graded honestly as Like New or Good so the price reflects exactly what you receive. There are no surprises on arrival and no vague “fully working” claims hiding a tired battery.
Battery health is stated on each listing above. If you'd rather keep your current iPhone 15 running, a battery or screen repair is often the smarter spend — get a fixed-price repair quote in seconds. Upgrading? Our trade-in portal turns your old device into instant credit.
New to buying pre-owned? Our 8-point buying checklist covers everything worth checking first.
Common questions
How much is a refurbished iPhone 15?+
A tested & certified iPhone 15 starts from £400 at Optimise Marketplace, with the exact price depending on storage, colour and condition grade. Every one includes a 24-month warranty, insured UK delivery and 14-day returns.
Is a refurbished iPhone 15 worth buying?+
Yes — though "refurbished" is not quite the right word for ours. Nothing has been rebuilt or modified: these are pre-owned handsets with 100% original parts, tested and graded. A iPhone 15 bought this way performs identically to new at a significant saving. Each device is fully diagnostically tested through our Phonecheck partnership, graded honestly and comes with a 24-month warranty (covering any fault not caused by you) plus 14-day returns.
Is the iPhone 15 unlocked?+
Our iPhone 15 stock is sold unlocked unless clearly stated otherwise, so it works with any UK network and with eSIM plans.
What battery health does the iPhone 15 have?+
Battery health is listed on every individual iPhone 15 listing, so you know before you buy. Our Like New devices typically ship at 90%+.
Compare the iPhone 15
Still deciding? See how the iPhone 15 stacks up against the alternatives.