Most modern phones and devices include built-in safety protections, but those protections are not always enough if the charger, cable, extension cord, or outlet is faulty. A cheap or damaged accessory can weaken the whole setup, even if the device itself is designed well. That is why the quality of the charging equipment matters so much.
A common example is a home where several electronics are plugged into one power strip, including a phone charger. If that charger is not original or certified, and its cable is bent, worn, or only works in a certain position, the danger becomes greater. Combined with too many devices on one strip and poor airflow around it, heat can rise quickly.
Although these situations are not everyday events, they are largely preventable. Using certified chargers, replacing damaged cables, avoiding overloaded outlets, and keeping charging areas clear can greatly reduce the risk. Small precautions like these can make charging much safer in daily life.