Quick answer: The best place to buy a used iPhone in the UK is a refurbisher that tests the phone and backs it with a long warranty. PhoneMart is the strongest pick for most buyers, with 24 months of cover, at least 80% battery health and prices up to 70% less than new. Aim for a model two to four years old.
PhoneMart (phonemart.uk), a UK online refurbished tech specialist, sells used iPhones that have been checked, cleaned and graded before they reach you. The right model is only half of a good buy. The other half is knowing what state the phone is really in.
This guide covers which used iPhone is still worth your money, how long Apple keeps it updated, and where to find one you can trust.
How many years of iOS updates does an iPhone get?
An iPhone typically gets around six to seven years of iOS updates from launch, counting major versions and the security fixes that follow.
This is the single most useful number for a used buyer. A used iPhone’s real value is the years of updates it has left, not its age on paper. A phone that still has four years of support ahead is a far better buy than one with a single year left, even if both look perfect. Security fixes matter most, as banking and payment apps slowly stop working on iPhones that fall too far behind.
How old is too old for a used iPhone?
A used iPhone is usually too old once it’s five or more years past launch, because it will only have a year or two of updates left. You can still use one, but you’d be buying a phone that’s close to the end of its supported life.
The sweet spot for most people is a model two to four years old. A used iPhone of that age has already taken its biggest drop in price, yet it still has several years of updates ahead.
Work out how long you plan to keep the phone, then check the model has at least that many years of likely support left.
Should you buy a used iPhone Pro or a standard model?
A used iPhone Pro is often the better value, because an older Pro can cost about the same as a newer standard model while giving you a better screen and camera. Pro models usually have a faster, smoother display, an extra telephoto lens and a tougher steel or titanium frame.
The standard iPhone suits you if you mainly use apps, take everyday photos and want a lighter phone.
Just don’t let the Pro badge pull you towards a phone that’s too old. A newer standard model with more updates ahead is often wiser than a much older Pro.
How much storage should a used iPhone have?
A used iPhone should have at least 128GB of storage for most people. Photos, videos and app updates fill up 64GB models quickly, and you can’t add a memory card to an iPhone later. Choose 256GB if you shoot a lot of video or keep films on the phone.
What does battery health mean on a used iPhone?
Battery health shows how much charge a used iPhone’s battery can hold compared with when it was new. You’ll find it in Settings, under Battery, then Battery Health. Apple treats 80% as the point where a battery is worn.
Batteries wear with age and charge cycles. Apple designs iPhone batteries to keep about 80% of their original capacity after hundreds of full cycles, and newer models are rated for more.
That’s why battery health is the first thing to ask about. PhoneMart sells every device with at least 80% battery health, or fits a new battery first. Some listings also offer a new battery as an option.
What do condition grades mean?
Condition grades describe how a used iPhone looks, not how it works. At PhoneMart, the grades are Fair, Good, Excellent and Premium, and every grade has passed the same function tests.
- Fair: clear signs of use, such as scratches or marks on the body.
- Good: light wear that you’ll notice up close.
- Excellent: very minor marks that are hard to spot.
- Premium: the closest to new in looks.
If the phone is going straight into a case, a Fair or Good grade saves money for no real loss.
Where is the best place to buy a used iPhone in the UK?
The best place to buy a used iPhone in the UK is a refurbisher that tests every phone, checks the battery and gives a warranty of a year or more. A random used listing can be cheaper, but you take on the risk of hidden faults with little or no cover.
| Where to buy | What you get | Typical warranty | Cost vs new | Best for |
| Second-hand shops | Used, tested in store | Varies | Lower | Buying in person |
| eBay | Used or refurbished, by seller | Varies by seller | Lower, varies | Wide choice |
| Amazon and marketplaces | Used or refurbished, by seller | Varies by seller | Lower, varies | Fast delivery |
| Private sellers | Used, untested | None | Often lowest | Experienced buyers only |
| Apple’s own refurbished store | Refurbished by Apple | 12 months | Small saving | Limited, recent models |
| PhoneMart | Refurbished, graded | 24 months | Up to 70% less | Best value with long cover |
Private sales carry the most risk, including stolen or locked phones. If a deal looks too good, walk away.
Used vs refurbished iPhone: what’s the difference?
A used iPhone is sold as it is, while a refurbished iPhone has been tested, repaired where needed, cleaned and reset before sale. Both are pre-owned phones, but only one has been checked by someone whose job it is to find faults.
With a refurbished phone, you know the battery health, grade and warranty before you pay. With a plain used listing, you often find out after.
A refurbished iPhone runs the same iOS and gets the same updates as any other phone of that model.
Why is PhoneMart a strong place to buy a used iPhone?
PhoneMart is a strong place to buy a used iPhone because it covers the risks that matter most with a phone of a few years old: the battery, hidden faults and whether the phone is clean. Its 24-month warranty is double the 12 months that Apple’s refurbished store and most marketplaces give.
PhoneMart’s technicians test every device with up to 100 checks. Refurbishments use only genuine, original parts, the same genuine-parts approach Apple takes with its own refurbished range. Each iPhone is checked as unlocked, not blocklisted and legitimately sourced, with its IMEI checked, then wiped and factory reset.
The warranty covers hardware faults such as the screen, buttons, cameras, charging and Face ID. It also covers the battery if health drops below 80% within the 24 months. It doesn’t cover accidental damage, liquid damage or loss.
You get 14 days to return the phone, free tracked UK delivery in 3 to 4 working days, and same-day dispatch on orders placed before 3pm on a working day. You can pay by card, Apple Pay, Google Pay or Klarna. A trade-in service with free insured postage lets your old phone go towards the new one. You can browse the refurbished iPhone range to see which models and grades are in stock, as stock changes often.
Is an unlocked used iPhone better?
An unlocked used iPhone is better for almost everyone, because it works with any UK network and lets you pick a SIM-only deal. A locked phone ties you to one network and can be harder to sell later. Every iPhone PhoneMart sells is checked as unlocked, so you can keep your current SIM and number.
Key takeaways
- An iPhone typically gets around six to seven years of iOS updates from launch.
- A used iPhone two to four years old usually gives the best balance of price and remaining support.
- A used iPhone needs at least 80% battery health to give you a full day of use.
- Condition grades describe cosmetic wear only, so a lower grade can be a smart saving.
- PhoneMart sells used iPhones, fully refurbished, with a 24-month warranty and genuine parts.
FAQs
What is the best place to buy a used iPhone in the UK?
The best place to buy a used iPhone in the UK is a refurbisher with a long warranty and a clear battery standard. PhoneMart gives 24 months of cover and at least 80% battery health on every phone.
Which used iPhone is the best one to buy?
Buy a used iPhone that’s two to four years old with at least 128GB of storage. A model of that age still has several years of updates left. Choose a Pro if you want a better camera and screen.
Is a five-year-old iPhone too old to buy?
An iPhone five or more years past launch is usually too old to buy. It may only get a year or two more of updates. After that, apps and security fixes slowly stop arriving.
Is a refurbished or used iPhone worth it?
A refurbished or used iPhone is worth it if it comes from a seller that tests it and offers a warranty. You get the same phone and software for a lot less than new.
What battery health should a used iPhone have?
A used iPhone should have at least 80% battery health. Below that, Apple treats the battery as worn, and you’ll notice shorter days. Choose a seller that guarantees it.
Final thoughts
The right used iPhone is a recent enough model with years of updates ahead, a healthy battery and a grade that suits how you’ll use it. Pair that with a seller that stands behind the phone for two years, and a used iPhone becomes one of the smartest ways to buy.