Nine features already built into devices you own — no upgrade, no purchase. The last one brings back notifications you swiped away by accident.
Almost every router can run a second, isolated Wi-Fi network. Put smart plugs, TVs and visitors on it, and a compromised gadget cannot reach your laptop or files.
Transparency mode uses the same microphones as noise cancelling, but pipes the room back to your ears. You can hear a platform announcement without removing an earbud.
Fall detection ships switched off on many watches. Once enabled, a hard fall with no response for about a minute triggers an emergency call and shares your location.
Lithium batteries age fastest when held at full charge. Most laptops now include a charge limit, and capping it near 80 percent slows that wear if you work plugged in.
Earbuds and watches sip so little power that a power bank decides nothing is attached and shuts down. A low-current or trickle mode, often a long press, keeps it awake.
USB-C cables carrying more than 3 amps need an e-marker chip inside. Without one the charger stays capped at 60W, however fast the charger and the laptop actually are.
Motion smoothing invents extra frames and makes films look like daytime video. Switching it off, or picking Filmmaker or Game mode, restores the look and cuts input lag.
Pro mode exposes shutter speed, ISO and focus, and saves RAW files holding far more detail in shadows and bright skies than the finished JPEG your camera app keeps.
Android keeps a notification history, but ships with it switched off. Turn it on in notification settings and every alert you dismissed by mistake is still listed there.
None of these cost anything and most take under a minute. Work through your own devices tonight and count how many are still switched off.