A warm iPhone isn’t always cause for alarm – but a hot one probably needs attention. Here’s a breakdown of the most likely culprits and what to do about each.
Heavy usage
Running demanding apps – games, video editing, long camera sessions, GPS navigation – pushes the processor hard and generates heat. Same goes for streaming high-quality video for extended periods.
This is usually normal. Give your iPhone a break, close the app, and it should cool down on its own within a few minutes.
Battery wear
An older, degraded battery works harder to deliver power, which produces more heat. If your iPhone is a few years old and getting hot more regularly than it used to, the battery may be the underlying issue.
Check Settings > Battery > Battery Health to see where yours stands. If it’s significantly degraded – below 80% – a battery replacement is worth considering to give your iPhone a new lease of life.
Charging
Wireless charging in particular generates more heat than wired. If your iPhone gets warm while charging, that’s expected – though it shouldn’t get uncomfortably hot. If it does, try switching to a wired charger or removing any case while charging, as cases can trap heat.
Environmental factors
Apple specifies an operating range of 0° – 35°C for iPhone. Direct sunlight, a hot car, or even a stuffy bag can push it over that threshold quickly.
Move it somewhere cooler and out of direct sunlight. If a temperature warning appears on screen, turn it off and let it cool before using it again.
Still overheating?
If your iPhone is getting hot without an obvious cause, or won’t cool down, here are a few more things to try.
Turn on Low Power Mode to reduce background activity and take pressure off the processor. Briefly plugging in to charge can also sometimes help the system stabilize, according to anecdotal evidence from message boards. It’s worth a try!
Finally, you should check Settings > General > Software Update and make sure you’re on the latest version of iOS, as updates occasionally include fixes for performance issues.
If none of that helps, it’s worth contacting Apple Support – persistent overheating can indicate a hardware problem.