A user's mobile device is overheating and losing battery life quickly. Which setting should they adjust to help resolve the issue?

Adjusting the display brightness is a key action for addressing overheating and rapid battery drain on a mobile device. When the screen brightness is set to high levels, it consumes a significant amount of battery power, thereby contributing to quicker battery depletion. Additionally, when a mobile device works harder to display a brightly lit screen, this increased processing effort can lead to overheating.

Lowering the screen brightness can reduce the amount of power the device uses, helping to maintain battery life and reduce thermal output. It is a fundamental recommendation when a device exhibits symptoms of overheating and battery issues. Other settings like privacy or storage generally do not have a direct and significant impact on heat generation and battery usage compared to display brightness.