When a phone cooler is worth considering

Engadget says phone coolers can help maintain performance when heat makes a phone slow down during sustained gaming or other demanding tasks, but they won't fix Wi-Fi or server lag. It suggests trying simpler fixes first, such as removing a thick case, keeping the phone out of direct sun or moving it near a car's AC vent. A cooler may make sense if the phone repeatedly slows down during long workloads despite those steps.