
Most devices are replaced long before they stop working. Something gets slow, something gets warm, the battery stops lasting the afternoon, and the conclusion is that it has had its run. Often the real cause is a clogged fan, a full drive, or three years of charging habits nobody mentioned at the point of sale. Knowing how to make devices last longer is mostly small maintenance applied early rather than heroics applied late.
Two things age electronics faster than anything else. The first is heat, which degrades batteries permanently and makes components work harder to stay stable. The second is a drive with almost no free space, which forces constant shuffling and makes a perfectly capable machine feel exhausted.
Both are addressable in an afternoon, and both are invisible until the symptoms look like old age. That is why devices so often seem to decline suddenly: the underlying cause built up quietly for a year, which is the point most advice on prolonging gadget life starts from.
Batteries wear by charge cycles and by heat, so the two useful habits are avoiding long stretches at very high or very low charge, and keeping the phone out of direct sun and off the dashboard. Many phones now offer optimized or limited charging, which holds at a lower level overnight and genuinely extends usable life.
A case and a screen protector are unglamorous and remove the most common cause of early replacement by a wide margin. When the battery does fade past usefulness, replacing it is usually far less than replacing the phone and buys another couple of years.
Dust in the vents is the main culprit. A fan that cannot move air leaves everything running hot, which throttles performance and shortens component life. Compressed air twice a year, and using the laptop on a hard surface rather than a duvet, handle most of it.
Keep a quarter of the drive free, restart weekly rather than only closing the lid, and be honest about what runs at startup. A five-year-old laptop that feels slow is more often carrying a decade of background programs than genuinely past it.

Tablets often sit at full charge in a drawer for weeks, which is one of the harder things you can do to a battery. Storing them around half charged and topping up before use is better for them than leaving them plugged in permanently.
Cables die at the connector, always, because of the angle they are pulled from. Unplugging by the plug rather than the cable, and not wrapping them tightly around a charger, extends their life dramatically for no effort at all. Much of what passes for device care is really just handling.
Updates are maintenance, not interruption. They patch security holes and often fix the efficiency problems that make an older device feel sluggish, and postponing them for months is a common reason a device seems to deteriorate.
Equally, be selective about what you install. Every background program takes memory and a share of the processor, and the accumulated weight of things you installed once and forgot is the single most common reason for a machine that used to be fast. An annual clear-out of programs you no longer open is worth more than most hardware upgrades.
A worn battery, a cracked screen, a failing drive, and a dead fan are all repairable at a fraction of replacement cost, and all of them are routinely treated as the end of the line. It is worth getting a quote before assuming otherwise, particularly on a device that was working well until the specific thing broke.
The judgment call comes when several things are failing at once, or when a repair costs a meaningful share of a replacement. Even then, keeping a device an extra year is usually the better outcome, and most maintenance guides for electronics underrate how much runway a single repair buys.
Keep things cool, keep a quarter of the storage free, charge gently rather than constantly to full, clear the vents twice a year, run the updates, and get a quote before writing anything off. None of it is demanding, and together it routinely adds years to devices that would otherwise have been replaced on the strength of feeling slow.
Bookmark FactMates if device upkeep is something you deal with often.