The Galaxy S23 arrived in February 2023, and three years on it has settled into a comfortable spot in New Zealand's refurbished market: flagship hardware that still runs everything current without complaint, at a level where the launch premium has long since drained out of the price. The Snapdragon 8 Gen 2 inside it was Samsung's exclusive that year, it still holds up well in today's apps and games, and unlike the iPhones of the same era it already uses USB-C.
This guide covers the questions that actually decide the purchase: whether a three-year-old Samsung flagship makes sense in 2026, what to inspect before you buy one, which storage size to pick, how it compares with the newer S24, and where to buy safely. If the Galaxy naming itself has never been clear to you, our explainer on what the Samsung Galaxy numbers mean gets you reading S23, S23 Plus and S23 Ultra fluently before you order.
Is the Galaxy S23 Still Worth Buying in 2026?
For most buyers, yes. The Snapdragon 8 Gen 2 still has headroom for mobile banking, navigation, streaming and games, and its efficiency is the reason the phone stays cool and quiet in everyday use rather than just on spec-sheet benchmarks. The 6.1-inch AMOLED display is lovely for video and reading, the 5G bands NZ carriers use are covered, IP68 means a rainstorm is not an event, and wireless charging works on standard Qi pads and most car mounts.
The one thing to verify rather than assume is software support. Samsung publishes its update policy model by model on its own site, so before you buy, check the Samsung support site for New Zealand and see where the S23 currently sits in that policy. If you are the kind of owner who keeps a phone for several years, weigh the remaining update runway into the decision rather than trusting anyone's rough memory — including ours.
The second honest caveat is age. Every S23 on the market is some years into its working life, and how the previous owner treated it now matters more than any comparison table. A cared-for S23 with a strong battery will outlive a neglected newer phone in daily use, which makes the condition grade and battery health of the specific unit in front of you more important than the model decision itself. For a realistic view of lifespan, see how long a refurbished phone should last.
What Should I Check Before Buying a Refurbished Galaxy S23?
Battery health is the first number to hunt for, and Android makes it less obvious than an iPhone does: there is no single percentage sitting in the main settings menu, so use the diagnostics in the Samsung Members app or ask the seller to show you the reading. A phone that lived on a nightstand differs wildly from one that spent its life on a delivery route. At EcoLoop, every phone we sell holds at least 80% of its original capacity, and we stock Galaxy S23 units at 80%, 90% or 100% battery health so you can choose the longevity tier you want instead of gambling. Our guide to how to check battery health before buying a used phone covers what to do when a listing stays vague.
Storage is the specification you cannot change after checkout, because the S23 line has no memory card slot to fall back on. 128GB and 256GB are the tiers you will see most on the NZ used market; the Ultra went higher still. Settle this before you order, not after your photos stop fitting.
Condition grading differs between sellers, so read what a seller actually means rather than trusting the label. At EcoLoop every device is tested and graded in Auckland, and the grades are defined on our condition guide, including what separates Good, Very Good and Like New in practice: scratches, dents, screen marks and where they sit. A grade should describe the specific unit in your cart, not work as a marketing adjective.
Then confirm two account details. The phone should be carrier unlocked so it works on Spark, One NZ or 2degrees with any plan; our explainer on whether refurbished phones are unlocked shows how to verify before you pay. And the previous owner's Google account must be signed out with the phone factory reset, because a device still locked to an old account sits on the reset-protection screen and no amount of hardware testing will clear it for you.
When the phone arrives, run the obvious checks while your 15-day change-of-mind window is open: the fingerprint reader under the display, both stereo speakers on a speaker call, every button, wireless charging on a pad, all the cameras including the flash, and 5G on your own carrier plan. Seals age with use, so treat the original water resistance of a several-year-old phone as faded rather than promised. Anything that fails a hardware check can go to repairs rather than the bin, and the FAQ page lists the questions buyers ask us most.
Which Galaxy S23 Storage Size Should I Choose?
128GB was the standard starting capacity in New Zealand and it suits most people: a few years of photos, the usual banking and work apps, messaging, a couple of games and a streaming-heavy habit, as long as your library lives largely in the cloud. It is also the most common tier on the used market, which makes it the easiest to find and the friendliest to your budget.
Go to 256GB if you shoot a lot of 4K video, download shows and maps for travel offline, or simply never want to manage space again. Because there is no memory card slot, the tier you buy is the tier you keep, and the step up costs noticeably less on the used market than it ever did on a new phone. 512GB units did reach some markets and suit people who shoot and archive everything on the device itself. The same thinking applies to the S23 Plus and S23 Ultra, which shipped in larger tiers. If you are unsure, one question settles it: how full is your current phone right now? If it is at its limit today, do not buy a refurbished phone with less room than you already have.
Galaxy S23 vs S23 Plus, S23 Ultra and S24: Which One Fits?
Inside the S23 family the differences are size, battery and camera ambition. The regular S23 is the compact pick, the same silicon as its siblings with no performance compromise, and the one to buy if you actually use one hand. The S23 Plus adds a bigger screen and a longer battery day for the same internals. The S23 Ultra is the large one: a higher-resolution main camera, an S Pen built into the body, more front-of-the-line zoom and bigger storage tiers than the base phone.
The S24, which arrived in 2024, is close enough that it does not rewrite the maths. The design is nearly identical, the camera and display gains are small, and the headline additions are software features most of which Samsung also backported to the S23. The genuine argument for the S24 in a used purchase is age: it starts its remaining update runway and its remaining battery life one year further ahead, and its position in Samsung's per-model update policy is newer. Confirm that policy on the Samsung support site rather than guessing.
In practice the decision gets made for you by this week's stock and prices. Browse the refurbished Samsung collection and compare what an S23, an S23 Plus or an S24 actually costs right now: when the gap is small, take the newer phone; when it is wide, the S23 wins on value. Stock moves in and out constantly, so never reason from old numbers.
Where Can I Buy a Refurbished Galaxy S23 Safely in New Zealand?
You broadly have three routes: a marketplace listing from a private seller, an overseas importer, or a New Zealand dealer that tests and supports what it sells. A private listing can suit a confident buyer who enjoys inspecting electronics in person, but dealer sales carry stronger consumer rights protections than private ones, so whatever route you choose, get the important answers in writing before money changes hands.
A certified dealer removes most of the risk questions. Every phone in our refurbished Samsung collection is tested and graded in Auckland, ships with a 12-month warranty and free NZ-wide delivery, and is backed by 15-day returns if the phone simply does not suit you. See current prices on the collection page, because S23 stock moves in and out and the storage tiers rarely sit around for long. If you are not settled on Samsung at all, the refurbished smartphones collection spans the whole used market, Apple and Pixel included.
And if an old device is funding the purchase, our trade-in page explains what we accept and how the quote works, lightly damaged devices included. Just sign out of the accounts on your old phone before shipping it, because a device with an active account lock cannot be bought.
