Your iPhone is built to run safely between 32°F and 95°F (0°C–35°C), and most people never think about that range until the phone feels too hot to hold. I learned this the hard way on a long FaceTime call with the phone plugged in: the back grew uncomfortably warm in under 15 minutes, then the screen dimmed on its own. That dimming was iOS entering thermal protection mode. iPhone overheating is almost never a hardware fault — it is a signal that one app, setting, or charging habit needs to change.
This is one of the most-searched iOS problems, and complaints spike after every major software update. The good news is that every cause below has a straightforward fix, and most take me under five minutes to apply.
Quick Answer
Remove the case, move to a cooler spot, and close background apps from the App Switcher. If you are charging while using the phone, unplug it and wait 10 minutes. For overheating that keeps returning, audit Location Services and Background App Refresh in Settings — a rogue background app is the single most common cause.
Which apps make an iPhone overheat?
Video editing, AR apps, 3D games, and turn-by-turn GPS navigation push the A-series chip hard. Under sustained load, especially inside a heat-trapping case, temperatures climb fast. The first time my phone threw a heat warning, a navigation app had been running in the background for an entire road trip.
How to fix it
- Open the App Switcher (swipe up from the bottom on Face ID models, or double-press Home) and swipe away anything you are not actively using.
- During gaming or AR sessions, take a five-minute break every 20–30 minutes.
- Remove the case during intensive use — the iPhone’s aluminum frame is designed to conduct heat away from the chip.
To find the culprit, go to Settings → Battery and check per-app power usage. Any app burning 40% or more of battery in the background is almost certainly your heat source.
Demanding apps are the usual offenders, so close them and shed the case before anything else.
Why does my iPhone get hot while charging?
Charging generates heat on its own. Add an active display and a demanding app on top, and the heat stacks up quickly — this combination is what most reliably trips the on-screen temperature warning for me.
How to fix it
- Unplug and let the phone cool for at least 10 minutes before resuming use.
- Avoid streaming video or running Maps while it charges.
- Use only Apple or MFi-certified chargers, since uncertified models run hotter. If you are also seeing slow charging, see our guide to iPhone charging problems.
- Enable Optimized Battery Charging under Settings → Battery → Battery Health & Charging.
When the temperature warning appears, iOS stops charging automatically. Place the phone face-down on a flat surface in a cool room for 5–10 minutes. Never put it in the freezer — rapid cooling causes condensation that can damage internal components.
Charging and heavy use at the same time is the fastest path to a heat warning, so separate the two.
Can Location Services cause overheating?
Yes. GPS is one of the most power-hungry components in an iPhone, and a single app left on “Always” location access polls the GPS chip nonstop, raising device temperature noticeably over a few hours. I once traced a persistently warm phone to a shopping app I had granted “Always” without thinking.
How to fix it
- Go to Settings → Privacy & Security → Location Services.
- Change any app showing “Always” to While Using the App, unless you have a specific reason such as Find My or an emergency SOS app.
- Disable Precise Location for apps that do not need an exact position — weather and shopping apps work fine with approximate location.
One app stuck on “Always” location can keep your phone warm all day, so tighten those permissions.
Should I turn off Background App Refresh?
If many apps have Background App Refresh enabled, your iPhone constantly fetches data and taxes the processor and network radio even when the screen is off. Trimming the list is one of the most reliable cooling fixes I recommend.
How to fix it
- Go to Settings → General → Background App Refresh.
- Change the top setting to Wi-Fi only, or disable it entirely.
- Scroll the app list and turn off refresh for games, photo editors, and shopping apps.
You rarely need background refresh on every app, so disable it for the ones you open by hand anyway.
Why did my iPhone overheat after an update?
iPhones often run warmer for 24–48 hours after a major iOS update while Spotlight re-indexes and iCloud Photos syncs. That is normal. A genuine bug, though, can cause runaway CPU usage that lingers well past that window.
How to fix it
- Go to Settings → General → Software Update — Apple patches thermal regressions quickly in point releases.
- After a big update, leave the phone on Wi-Fi and plugged in overnight so background tasks can finish before heavy use.
- If overheating started with a specific iOS version, check Apple’s community forums for confirmed bug reports and a fix timeline.
Post-update warmth that clears within two days is normal; heat that persists points to a bug worth patching.
Can heat and sunlight overheat an iPhone?
An iPhone left on a car dashboard in summer can exceed its safe temperature range in minutes, even with the screen off. The glass back absorbs radiant heat fast, and a dark case speeds it up further.
How to fix it
- Keep the phone in a bag or pocket outdoors, never on a surface in direct sunlight.
- Never leave it in a parked car; interior temperatures can reach 130°F (54°C) or higher on a warm day.
- If it has already overheated outdoors, move it into shade and let it cool naturally.
Environmental heat alone can trip the warning, so keep the phone shaded and out of hot cars.
When is a warm iPhone normal versus a problem?
Not every warm iPhone is in trouble. The table below shows when warmth is expected and when it signals that you should act.
| Scenario | Normal? | What to Do |
|---|---|---|
| Warm during a 20-minute call | Yes | Nothing needed |
| Hot during GPS navigation + charging | No | Unplug; close Maps between turns |
| Temperature warning on screen | No | Unplug; cool in shade 5–10 min |
| Warm while an iOS update installs | Yes | Let it complete |
| Hot with no apps open | No | Check Battery usage; force restart |
Brief warmth during calls or updates is fine; a temperature warning or heat with nothing running is not.
Common Mistakes to Avoid
- Putting it in the freezer. Rapid cooling causes condensation inside the device. Fix: cool at room temperature only.
- Ignoring the temperature warning. iOS will shut the device down to protect the hardware. Fix: close the offending app before dismissing the alert.
- Leaving the case on while cooling. Rubber and folio cases trap heat. Fix: remove the case so the phone cools faster.
- Using uncertified chargers. Cheap third-party chargers run hotter and amplify overheating. Fix: switch to an Apple or MFi-certified option.
- Skipping battery health checks. A battery below 80% capacity makes more heat under the same load. Fix: check Settings → Battery → Battery Health & Charging periodically.
Frequently Asked Questions
Is it normal for my iPhone to get warm while charging?
Mild warmth during fast charging is expected; hot to the touch or an on-screen temperature warning is not. When my phone got hot charging overnight on a cheap pad, swapping to a certified charger fixed it.
Can overheating permanently damage an iPhone?
Yes. Apple states that sustained temperatures above 95°F (35°C) can permanently reduce battery capacity. I have seen a phone left repeatedly on a sunny dashboard lose noticeable battery health within a single summer.
Why did my iPhone overheat after a software update?
Post-update background tasks stress the CPU for 24–48 hours, which is normal. After one update my phone ran warm for a day, then settled once indexing finished; if heat lasts past two days, install any point release.
My iPhone is overheating and losing battery fast. Are they related?
Often yes, because the same rogue background app causes both. I found one app at the top of Settings → Battery, force-quit it, and both problems stopped — our iPhone battery drain guide covers this in detail.
Does a force restart help an overheating iPhone?
Yes, when a stuck process is the cause. Once my phone stayed hot with no apps open, and a force restart cleared it instantly; if heat returns right after, an app or setting is the real culprit.
Conclusion
iPhone overheating almost always traces back to one of these causes: demanding apps, charging while in use, “Always” location tracking, background refresh overload, a software bug, or environmental heat. Work through the fixes in order — I usually find relief after the first two or three steps.
If the heat keeps returning, our guides on iPhone battery drain and iPhone charging issues often point to the same root cause. Fix that one background app, and both problems usually disappear together.
Last updated: June 25, 2026