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Finding a switched-off iPhone: 24 hours vs. 7 days

A powered-off iPhone can be found for up to 24 hours on supported models with the Find My network on. Seven days is how long the last location stays in the app. We separate these from the 5-hour and Send Last Location rules using Apple's documents.

Smartphone warranty is 2 years in Korea, but the battery gets 1

Under Korea's Fair Trade Commission consumer dispute resolution standard, smartphones carry a 2-year quality warranty but the battery only 1 year. When the period starts, what happens without a receipt, and how the refund is calculated when parts are unavailable, from the original notice.

Carbon, ceramic or oil heater: same watts, same electricity

Every electric resistance heater converts electricity to heat at 100% regardless of type, so the same wattage uses the same energy. Carbon or infrared heaters use less only when they let you run fewer watts for less time. What truly differs in efficiency is a heat pump.

Windows 10 consumer ESU extended to October 12, 2027

Windows 10 Extended Security Updates for personal devices has been extended by a year to October 12, 2027. PCs already enrolled need no action, and unenrolled PCs can still enroll until then. The conditions and how to check, from Microsoft's official pages.

One AirPod or Galaxy Bud not working: what to check

If one earbud is completely silent, check charging and reset (AirPods) or coupling (Galaxy Buds); if it is only quieter, check debris, ear tips and the balance setting. The order and model differences follow Apple and Samsung's official guides.

Can you charge a laptop with a lower-wattage charger?

Manufacturers differ on USB-C chargers with lower wattage than the original. Apple says a Mac will charge but recommends at least the suggested wattage; Samsung says charging can become much slower or the screen may flicker and advises the original adapter.