Practical ways to keep your smartphone cool while driving

Smartphones left in a car can reach temperatures that harm internal parts and, in rare instances, trigger battery swelling or thermal runaway. The problem stems from the vehicle’s metal cabin heating up under sunlight and the phone’s own heat generation, particularly during charging or heavy processing. To mitigate risk, users should keep phones out of direct sun, remove insulating cases, and place them near an air vent without over-cooling, which could cause condensation.

Avoid charging, especially wireless charging, while the phone is mounted, and limit CPU-intensive activities by dimming the display and disabling unnecessary connections. When a device feels excessively hot, the immediate response should be to power it down and relocate it away from heat sources. These precautions help preserve device longevity and prevent safety hazards.