Gadget Myths That Keep Costing People Money

This advice dates back to nickel-cadmium batteries, which were common in older devices and genuinely benefited from full discharge cycles to reset so-called "memory effect." Lithium-ion batteries — the type in virtually every smartphone, laptop, and wireless earbud sold today — work on an entirely different chemistry.

Each charge cycle counts against a battery's total lifespan, and a full 0–100% cycle stresses the cells more than a partial top-up. Battery engineers at major manufacturers consistently recommend partial charges as the healthier pattern. Regularly draining to zero can accelerate capacity loss over time. For practical guidance on everyday charging habits, see keeping your gadgets in good shape for longer.

Modern devices include battery management circuits that halt the charge current at 100% and switch to drawing power directly from the adapter rather than the battery. Some manufacturers take this further with features that intentionally cap overnight charging at around 80% and only top up to 100% just before the user's typical wake time, based on learned patterns.

That said, sustained heat — not the act of being plugged in — is the real battery enemy. Charging while running demanding tasks, or leaving a device in a hot car, degrades cells faster than overnight charging ever would. If you're weighing wired versus wireless overnight charging and wondering about heat differences, wired vs. wireless charging compared covers the practical trade-offs.

A megapixel is simply one million pixels — a measure of resolution, not image quality. A 50-megapixel sensor crammed into a tiny phone camera module can produce noisier, less detailed images in low light than a well-designed 12-megapixel sensor with larger individual pixels that capture more light per shot.

Computational photography — the image processing software running after you press the shutter — has arguably become more important than hardware specs for typical everyday shooting. When evaluating any gadget purchase on raw specification numbers alone, it pays to look past the headline figure. Our practical gadget buying checklist outlines a more complete framework for assessing real-world value.

Both major mobile operating systems are designed to manage background apps automatically. Suspended apps in the background use negligible memory and essentially no processor time. When you force-close an app and reopen it, the phone has to reload it entirely from storage — a process that uses more power and takes more processor effort than simply resuming a suspended app would.

The exception is a specific app that is genuinely misbehaving — running hot, draining battery visibly, or freezing. In those cases, force-closing or restarting the device is a reasonable targeted step. But as a habitual routine, swiping away every background app is a myth-driven behaviour that costs more than it saves.

Incognito and private browsing modes are genuinely useful for what they do: preventing the browser on that device from recording your session locally. That is helpful when using a shared computer or avoiding personalised ad targeting based on a one-off search.

What it does not do is mask your IP address, encrypt your traffic beyond standard HTTPS, or prevent your internet service provider from seeing which sites you visit. Websites themselves can still identify and track you through server-side methods. True anonymity online requires additional tools and understanding — private mode is a useful local privacy feature, not a shield against external observation.