As a phone charges, it naturally produces heat. If that heat cannot escape, it may shorten battery life, damage internal parts, contribute to battery swelling, and in rare cases increase the risk of smoke or fire.
The article recommends charging phones on hard, flat, well-ventilated surfaces such as a bedside table, desk, shelf, or countertop. It also advises avoiding mattresses, couches, clothing piles, pillows, and blankets while charging.
For extra safety, use reliable chargers and cables, replace damaged or swollen batteries, avoid extreme temperatures, and keep charging areas clear of flammable materials. A simple change in where you charge your phone can reduce overheating risks.
