James Whitfield
Content Editor
Updated 2 May 2026
Published 23 April 2026
11 min read
A new iPhone 15 from Apple costs £799. The exact same handset, refurbished and "Excellent" graded, costs £429 on Mozillion right now. That's a £370 saving — almost half price.
So is the refurb route a no-brainer? Mostly yes, but with five real caveats most reviews skip. Here's what 18 months of testing refurbished phones (and getting one bad one back) taught me.
What "refurbished" actually means in the UK
The word gets thrown around loosely. There are four genuine categories you'll encounter:
- Apple Certified Refurbished — sold direct by Apple. Replaced battery, new outer shell, full one-year Apple warranty. Usually 10-15% off retail. Limited stock.
- Network Refurbished — handsets returned within the network's 14-day cooling-off period, restored, sold under "Like New". Vodafone, EE, O2 all do this. Cheaper than Apple Certified, usually 20-30% off.
- Third-party Refurbished — independent retailers (Mozillion, MusicMagpie, Back Market, CeX, Grade Mobile) buy stock from networks, trade-ins, or insurance write-offs, refurbish them, and resell. Best discounts (30-60% off) but variable quality.
- "Used" or "Ungraded" — anything cheaper than the categories above. Skip these unless you know the seller.
ValueSwitch lists deals from category 2 and 3 — both come with warranties and are subject to UK consumer protection law.
How grading actually works
Most UK refurb sellers use a 4-tier grading system:
| Grade | Cosmetic condition | Typical discount vs new | |-------|-------------------|-------------------------| | Brand New / Pristine | Sealed box or 0 marks | 10-20% | | Excellent / Grade A | No visible marks at arm's length | 25-35% | | Good / Grade B | Light scratches on screen or back | 35-45% | | Fair / Grade C | Visible wear, dents possible | 45-60% |
Critically, grading is cosmetic only — internals on a Grade C phone are tested to the same standard as Grade A. The difference is purely how it looks.
For most people Grade A is the sweet spot: significant savings, looks new in a case, identical performance.
Compare refurbished iPhones from Mozillion →
The 5 things to check before buying any refurb iPhone
1. Battery health (the big one)
iPhone batteries degrade with charge cycles. Apple shows the battery health percentage in Settings → Battery → Battery Health. Anything below 85% means you'll need a replacement within 18 months (£89 at Apple, £55 at independent repair shops).
Reputable refurb sellers state the battery health on the listing. Mozillion guarantees 80%+; Back Market guarantees 85%+. If a listing doesn't mention it, walk away.
2. Warranty length
UK consumer law (Consumer Rights Act 2015) gives you 6 years to claim against a faulty product, but most refurb sellers offer their own shorter warranty:
- Apple Certified: 12 months
- Mozillion: 12 months
- MusicMagpie: 12 months
- Back Market: 12 months
- CeX: 24 months (best in class)
Ignore "30-day returns" — that's not a warranty, that's a return window.
3. iCloud lock check
Stolen iPhones get reported to Apple, which locks them out of iCloud. A locked phone is a brick. Reputable refurb sellers check IMEI status before listing, but always:
- Ask the seller for the IMEI before paying
- Check it on Apple's Activation Lock checker (now removed, sadly — use IMEI24.com or similar)
- Refuse any phone where the seller won't provide the IMEI
4. The charger thing
iPhones since the 12 series don't ship with a charger. Refurbished iPhone 12s and newer also won't include one — they were never sold with one. iPhone 11 and older should come with a Lightning cable + 5W brick.
Mozillion and Back Market clearly state what's in the box. Cheaper sellers don't. Add £15-30 for a charger if missing.
5. The mid-cycle iPhone problem
Apple releases new iPhones in September. A refurbished iPhone 14 in December 2026 might have been someone's daily driver since October 2024 — that's 26 months of use already. Check the listing for "year of manufacture" if available, or just assume the worst case (~24 months use) for any phone that's been in market for over a year.
When new wins over refurb
Three scenarios where buying new makes financial sense:
Heavy upgrader (every 2 years): If you sell your phone via Music Magpie or trade-in to Apple every 2 years, the depreciation curve favours new — you'll get better resale value from a one-owner unit.
Through a network contract: Three, EE and Vodafone all run aggressive contract deals where the headline £35/month for 24 months on a new iPhone works out cheaper than the refurb cost + a SIM-only plan combined. Run the numbers — total contract cost vs (refurb price + 24× monthly SIM cost).
Brand new model first 6 months: When a new iPhone launches, refurb supply is thin and prices barely beat retail. Wait at least 6 months for refurb stock + pricing to mature.
Real price comparison: iPhone 15 128GB Black
Snapshot from May 2026:
| Source | Condition | Price | Total cost (with 24-mo SIM at £20/mo) | |--------|-----------|-------|---------------------------------------| | Apple direct | New | £799 | £1,279 | | Apple Certified | Refurb (1yr warranty) | £679 | £1,159 | | Mozillion | Brand New | £429 | £909 | | Mozillion | Excellent | £359 | £839 | | Mozillion | Good | £319 | £799 | | Vodafone Pay-Monthly | New + 50GB | £40/mo × 24 = £960 | £960 all-in |
The cheapest path to using an iPhone 15 for 2 years: refurb Good from Mozillion + Lebara £4.50 SIM = £319 + £108 = £427 total. That's a third of buying new outright.
Browse Mozillion refurbished iPhones →
Frequently asked questions
Is a refurbished iPhone as good as a new one?
For Grade A and Pristine refurbs, performance is identical to new — same processor, same screen, same camera. The differences are cosmetic (light wear) and battery health (typically 85-100% vs 100% on a new phone). A 12-month warranty covers any genuine fault.
Where can I buy a refurbished iPhone in the UK safely?
Stick to established sellers with proper warranty terms: Apple Certified Refurbished (most reliable, smallest discount), Mozillion (good selection, 12-month warranty, IMEI checked), MusicMagpie (high street brand, 12-month warranty), Back Market (international marketplace, varies by individual seller). Avoid eBay private sellers and Facebook Marketplace unless you can verify the IMEI in person.
How long do refurbished iPhones last?
Same lifespan as new — typically 5-7 years before they stop receiving iOS updates. The battery is the main wear part: expect to replace it once during ownership (£89 at Apple). A 2024 iPhone 15 bought refurbished in 2026 should easily reach iOS 23 in 2030+.
What's the difference between "Refurbished" and "Used" iPhones?
Refurbished has been opened, tested by a professional, repaired or replaced as needed, and warrantied. Used is sold as-is by a private seller with no testing, no warranty, and no guarantee of working order. Refurbished costs 5-15% more but eliminates almost all the risk.
Will a refurbished iPhone work with any UK network?
Yes — refurbished iPhones sold by reputable UK sellers are unlocked. Pop in any UK SIM (EE, O2, Three, Vodafone, Lebara, giffgaff, etc.) and it'll connect. The exception: phones marketed as "network refurbished" by a specific carrier may be locked to that network for the first 30-90 days. Mozillion, Back Market and MusicMagpie all sell unlocked.
Can I get a refurbished iPhone on contract?
Yes — Vodafone, EE and Three all offer refurbished/Like New iPhones on pay-monthly contracts. The advantage: spread the cost over 24 months interest-free. The disadvantage: you usually pay 10-20% more in total than buying outright + a SIM-only plan. Run both numbers before signing.
Is the battery on a refurbished iPhone replaced?
Sometimes — Apple Certified always replaces the battery if below 80%. Third-party refurb sellers vary. Mozillion replaces below 80%. MusicMagpie discloses health on the listing but doesn't always replace. Always check the listing detail or ask the seller.
Reviewed by James Whitfield, ValueSwitch broadband and energy analyst. Last update: May 2026. We may earn commission when you click through to refurbishers — this never changes which products we recommend or how we rank them.