How to Check a Refurbished Phone Before You Buy

Buying a refurbished phone is one of the smartest moves you can make with your money. You get a phone that works, at a fraction of the new price, and you keep a perfectly good piece of kit out of landfill. But “refurbished” covers a huge range, from a practically brand-new handset that was returned after three days to a beat-up device that’s been through the wringer and barely cleaned before resale.

The difference between a great buy and a frustrating one comes down to a handful of things you can check before you hand over any money. Here’s the list we’d go through ourselves.

Buy From Someone Who Actually Stands Behind It

This one matters more than any spec or price. A warranty and a clear returns policy are the single biggest indicator that a seller is confident in what they’re selling. If something goes wrong in the first few months, or the phone turns out not to be as described, you need a route back.

A 12-month warranty is a reasonable minimum. It means the seller has tested the device properly and is prepared to deal with problems. Short warranties, vague “30-day limited” clauses, or no warranty at all are all signs to be wary.

Returns policy: read it. You want to know what happens if the phone doesn’t match the listing, or if there’s a fault you didn’t expect. If a seller won’t put a returns window in writing, that tells you something.

The cheapest listing is rarely the best deal once you factor in what happens if something goes wrong.

Understand What the Grade Actually Means

Grades exist because refurbished phones vary in cosmetic condition. The problem is there’s no universal standard, so “Grade A” from one seller is not necessarily the same as “Grade A” from another. Always read the seller’s own definition.

As a rough guide, most sellers use something like this:

Like New: Essentially indistinguishable from a new device. No scratches, no scuffs. Often an ex-display or a return that was barely used.

Excellent (sometimes Grade A or Grade B): Might have very light marks that are hard to spot under normal light. Nothing you’d notice day-to-day. This is the sweet spot for most buyers.

Good (sometimes Grade C): Visible scratches or scuffs, possibly a small mark on the screen. The phone works perfectly, it just looks a bit lived-in. Fine if you put it straight in a case, or if you genuinely don’t mind a bit of wear.

Decide what you’re comfortable with before you start browsing. A Good-grade phone at a lower price might be exactly right for a kid’s first smartphone. If you’re fussy about condition, pay a little more for Excellent.

Check the Stated Battery Health

Batteries degrade over time, and this is the one thing that makes the biggest practical difference to how a phone feels to use day-to-day. A phone with 70% battery health needs charging more often and will shut down unexpectedly. A phone with 88% feels close to new.

Aim for 80% or above as a minimum. Ideally 85% or higher. Many better sellers will publish battery health per device rather than just saying “battery tested.” If battery health isn’t listed and you’re buying something more than a couple of years old, ask.

On an iPhone you can check this yourself under Settings, Battery, Battery Health. On Android it varies by model, but most newer phones have a battery health figure tucked away in the settings or via a diagnostic app.

Make Sure It’s Unlocked

An unlocked phone works with any UK network’s SIM card. A locked phone will only work with the original carrier it was tied to. If you’re on a different network or you like the flexibility of switching, you need unlocked.

Most reputable refurbished sellers sell unlocked phones as standard, but it’s worth confirming before you buy. The listing should say unlocked explicitly. If it doesn’t, ask.

Do the IMEI Check

Every phone has a unique IMEI number, which you can find by dialling *#06# on the handset. A blacklisted IMEI means the device has been reported lost or stolen, and it will stop working on UK networks.

A reputable seller guarantees that every phone they sell has a clean IMEI. If you’re buying direct from a seller rather than a marketplace, you can ask for the IMEI before purchase and run it through a free checker such as IMEI.info or Checkmend. This is a two-minute step that rules out a serious problem.

Read the Listing Properly

A good listing is specific. It tells you what grade the phone is, what the battery health is, whether it’s unlocked, what’s included in the box (cable, adapter, original box), and what testing has been done. Photos should be of the actual device, not stock images.

Vague listings are a warning sign. “Fully tested, works great” with no detail on grade, battery, or inclusions leaves you with no comeback if the phone arrives in a worse state than you expected.

Also check what’s in the box. Some refurbished phones come with a cable and adapter, others come with nothing. That matters if you’re buying as a gift or if you don’t have the right charger.

Red Flags: When to Walk Away

A few things should make you hesitate and look elsewhere:

No warranty, or a very short one with plenty of carve-outs. No grade or battery health listed, and the seller won’t provide them on request. A price that looks significantly lower than anything else for the same model and grade - often a sign something isn’t right. No returns window. Stock images rather than photos of the actual device. A marketplace seller with few or no reviews.

Any one of these on its own might have an explanation. Several of them together and you’re better off finding a different seller.

What We Do at mendmyi

Every refurbished phone we list has a grade and battery health documented on the listing. We test each handset before it goes up for sale, and every device comes with a 12-month warranty. If something isn’t right, you have a clear route back to us.

We sell a range of iPhones and Androids in Haverhill, and you can browse what’s in stock at our shop. The checklist above is exactly what we’d tell a friend to go through before buying from anyone.