Will it damage the battery if the phone is charged overnight without being unplugged?

Long term charging may cause the battery to overheat and damage it. Therefore, it is recommended not to charge the phone overnight. It is best to unplug the power promptly after the battery is fully charged to avoid overcharging. Additionally, it is recommended to use an original charger to avoid issues such as uneven, fast, or slow charging, and to better protect the battery.