Pros Say This One iPhone Mistake Is Making Your Device Run Hot—Here’s How To Fix It

Your iPhone might be tough, but its battery definitely has limits, especially when it comes to temperature. Whether it’s freezing cold or you’re in the middle of a heat wave, extreme temperatures can put serious stress on your phone’s battery, causing it to drain faster, perform poorly, or even shut down unexpectedly. Apple actually recommends keeping your iPhone in settings between 32°F and 95°F (0°C to 35°C) for best performance, and going outside that range too often can shorten your battery’s lifespan over time.

While you can’t always control the weather, there’s one super common (and totally avoidable) mistake that could be making your iPhone heat up even more than it needs to: keeping your phone on its highest brightness setting at all times. Here’s what you need to know about this under-the-radar mistake that can easily be avoided.