Almost everything people repeat about phone batteries was true of a different battery chemistry. Nine myths, and the one thing that really does the damage.
Your phone stops drawing current at 100%. It won't overcharge. The mild cost is the hours parked at full, not the act of leaving it plugged in.
That was the memory effect in old nickel-cadmium cells. Lithium-ion hates deep discharge. Top up whenever you like; short partial charges are ideal.
Phones negotiate the speed and throttle it as they fill. A high-wattage charge that stays cool is gentler than a slow one that leaves the phone warm for hours.
Backgrounded apps are frozen, not running. Force-quitting them means the system pays the full cost of launching them again. It usually costs you battery.
Any certified USB Power Delivery charger is fine, and the phone controls how much it takes. The real risk is uncertified no-brand gear with no safety circuitry.
That figure is a decade out of date. Recent iPhones are rated to keep 80% of capacity after 1,000 full cycles, and EU rules now require at least 800.
Taking a call while charging is harmless. What isn't ideal is heavy gaming on charge under a blanket, because two heat sources stack up with nowhere to vent.
The coil isn't the problem. Induction wastes more energy as heat, so a badly ventilated pad runs the pack warmer. A cool pad is no worse than a cable.
Never. Rapid cooling pulls condensation inside the case, and lithium cells are damaged by extreme cold as well as heat. Shade and airflow, nothing more.
Strip the nine myths away and one villain is left: temperature, plus long spells sitting at 100%. Keep it cool and roughly mid-charge, and stop worrying.