Gadget Myths That Keep Costing People Time and Money

Modern mobile operating systems — both iOS and Android — are designed to manage background processes automatically. When an app is not actively in use, the OS suspends it so it consumes negligible resources. Force-closing it removes it from memory entirely, so the next time you open it, the processor works harder to reload everything from storage. Apple and Google have both addressed this directly in their developer documentation. Unless a specific app is misbehaving and draining power in the background, manual force-closing is counterproductive.

This myth has roots in older nickel-cadmium battery technology, which genuinely was harmed by overcharging. Today's lithium-ion cells are managed by dedicated charge controller circuits that regulate current automatically. Many flagship phones now also include software features — such as optimized or adaptive charging — that learn your sleep schedule and pause charging at around 80 percent until shortly before you wake up. Overnight charging is not ideal for long-term battery chemistry, but it is not the damaging habit it once was with older battery types.

Megapixels measure resolution: how many individual pixels make up a photograph. A high megapixel count lets you crop aggressively or print at very large sizes, but it says nothing about how well the camera performs in low light, how accurately it reproduces color, or how well it handles dynamic range. A camera with a physically larger sensor and a well-designed lens can produce noticeably better images than a higher-megapixel competitor with a smaller sensor. This is why many photographers and reviewers evaluate cameras on sensor performance and optical quality rather than resolution specs alone.

Most modern smartphones — and all iPhones — encrypt storage by default, meaning a factory reset effectively renders remaining data unreadable without the encryption key. However, on older Android devices or those where encryption was never enabled, forensic tools have been shown to recover fragments of data after a standard reset. Before selling or donating any device, it is worth confirming that encryption is active. For older hardware where this is uncertain, enabling encryption before performing the factory reset provides a meaningful additional layer of protection.

Fast-charging standards such as USB Power Delivery use a communication handshake between the charger and the device to agree on a safe voltage and current level. If you plug a 65W charger into a phone that only supports 18W charging, the phone will draw 18W — not 65W. The charger does not push power; the device pulls what it needs. The only practical concern is using a charger that does not meet basic safety certifications, where build quality rather than wattage is the real risk factor.

Wi-Fi and Bluetooth radios in contemporary devices are designed to operate in low-power modes when idle. The power draw from a connected Wi-Fi radio is often lower than the cellular data radio your phone uses as an alternative, because Wi-Fi typically delivers data faster and at shorter range. Bluetooth Low Energy — the standard used by most accessories — is designed specifically to consume minimal power. Disabling these radios is worth considering on a device with critically low battery, but as a routine habit it offers modest gains compared to reducing screen brightness or limiting location services.