How to Choose Tech That Won't Feel Old in Two Years

Almost nobody replaces a device because it stopped working. They replace it because it stopped being pleasant: updates ended, the battery needed charging by mid-afternoon, an app refused to install, the charger that came with everything else in the house did not fit.

None of those failures is on the specification sheet you compared before buying. This guide is the entry point to our Tech & Audio coverage, and it deliberately avoids the question of which device is fastest. It asks a longer question instead: what makes a device stay useful, and which of those things you can check before you pay.

What actually makes a device feel old

Four things, in roughly this order of importance. Software support ends, so security updates and eventually app compatibility stop. Storage and memory fill up as the software written for the device grows over its life. The battery degrades, which is a wear part behaving normally rather than a fault. And the world around the device moves — a connector changes, an accessory standard shifts, a service the device depends on is retired.

Raw processing speed is well down that list. When a device genuinely feels slower than it did, the cause is usually software weight, storage pressure or thermal throttling rather than a chip that aged. This matters because the processor is the thing marketing talks about, and the four causes above are the ones that end a device's life.

Software support is the real expiry date

Since April 2024, UK rules on consumer connectable products have made this checkable rather than guesswork. Manufacturers selling in-scope products in the UK must publish the minimum length of time the product will receive security updates, including an end date, alongside a ban on universal default passwords and a published route for reporting vulnerabilities. Products must also be supplied with a statement of compliance.

Three caveats decide how you use that. The rules require transparency, not generosity: there is no minimum length, so a published period can be short and still lawful — which makes it a comparison tool between competing products rather than a guarantee of longevity. Several categories sit outside the regime, including desktop and laptop computers and Wi-Fi-only tablets. And a security update period is not the same as a feature or operating system update period; a device can remain patched while quietly falling behind the version app developers target.

Before buying, find the manufacturer's product security or support page, read the end date, and treat a vague answer as an answer. The mechanics of these windows are set out in software support lifespan for devices.

Headroom: memory, storage and thermal design

Headroom is capacity you are not using yet. It is the cheapest longevity you can buy, and the hardest to add later.

On storage and memory, the question is not how much you need now but whether you can change it afterwards. Where a device is sealed and non-upgradeable, the base configuration will age fastest, and buying a tier up front is usually better value than replacing the whole device early. Where storage or memory can be expanded, the opposite holds: buy the cheaper tier and upgrade when you need to.

Thermal design is the overlooked half. A device that cannot shed heat will maintain its peak figures only briefly, and sustained performance is what you actually experience. That distinction between peak and continuous figures — and how test conditions produce them — is covered in product specifications explained.

Ports, standards and the accessory trap

Ports outlive devices, because they determine what else you own. When a connector changes, chargers, docks, cables and adapters all become dead stock at once, and the replacement cost rarely appears in anyone's comparison.

Prefer widely adopted connectors over proprietary ones, and check what the port actually does rather than what shape it is. The same physical connector can carry very different data speeds, charging power and video capability, and only the specification text will tell you which. A device that omits that detail has told you something.

The same reasoning applies to wireless standards. New versions are generally backwards compatible, so a newer revision only pays off when both ends support it — which makes it worth more on equipment you keep through several replacement cycles, like a router, than on a device you will replace sooner.

Battery replaceability and service cost

Batteries are consumables. Every rechargeable cell loses capacity with cycles and age, so a device whose battery cannot be economically replaced has a hard lifespan regardless of how well the rest of it is built.

Three checks before buying. Is a replacement service published with a price, or do you have to ask? Is the pack held in with fasteners or with adhesive? And what proportion of the device's price is a replacement — because that ratio, more than any specification, tells you whether the manufacturer expects you to repair it or replace it.

Treat the manufacturer's runtime claim as a laboratory figure rather than a forecast, for the reasons set out in battery life claims explained, and treat the eventual replacement as a scheduled cost rather than a surprise — the approach behind total cost of ownership.

Buying one generation behind: when it works

The discount on last year's model is real, but so is the time already elapsed. A support window normally starts when the model was released, not when you bought it, so subtract the months that have passed before comparing it with a current model. A large discount on a device with a short remaining window is not a saving.

Buying a generation behind works well when the change between generations was incremental — a modest performance step, a cosmetic revision, a feature you will not use. It works badly when something structural changed: a new connector, a different radio standard, a raised operating system baseline, or a shift in how the manufacturer handles repairs. In those cases the older device is not a cheaper version of the new one; it is the last of a different thing.

Ecosystem lock-in and the cost of leaving

Most devices now arrive attached to an account, and the attachment is the point. Purchased media, subscriptions, stored data, paired accessories and hubs all raise the cost of switching later, which means the price of leaving is set on the day you join.

Three questions keep that cost visible. Can your data be exported in a usable form? Does the device still function if the manufacturer's service is withdrawn, or does it depend on a server to do anything at all? And is there a local or standards-based fallback if the app is discontinued? Devices that keep working offline age far better than devices that do not — the pattern behind smart home compatibility.

A five-point future-proofing check

1. Find the published support end date and write it in your calendar. If you cannot find one, that is your answer.
2. Decide what is upgradeable. Sealed storage and memory mean buying headroom now; expandable means buying the cheaper tier.
3. Price a battery replacement as a proportion of the purchase price, before you buy.
4. Check the ports against what you already own, and check what the ports can actually carry.
5. Ask what breaks if the manufacturer walks away — the account, the app, the hub, the cloud service.

None of these five is a performance question, which is the point. Longevity is a construction and commitment question, and the habits that reveal it are the same ones in how to judge product quality online.