Fix Overheating iPhone iOS 11: 12 Proven Ways

If your iPhone running iOS 11 gets hot to the touch, drains battery fast, or shows a temperature warning, the fix usually involves closing background apps, updating to the latest iOS 11 patch, and checking for rogue settings. Start by force-closing all apps, then follow the step-by-step solutions below to cool it down and prevent future overheating.

Why iOS 11 Causes Overheating

iOS 11, released in 2017, introduced several features that were heavy on the processor and GPU. The new App Store, augmented reality (AR) tools, and a more dynamic notification system all demand more from the CPU. On older iPhones like the 6, 6s, and 7, this extra load translates directly into heat. Additionally, early versions of iOS 11 had bugs in the background app refresh and indexing system, which caused the phone to work harder than necessary even when idle.

Another common trigger is the initial setup period. For the first 24–48 hours after updating, your iPhone re-indexes all photos, messages, and files for Spotlight search. This heavy background activity can make the device warm, but it should subside. If your phone stays hot for days, one of the fixes below will likely solve it.

Quick Cooling Steps to Do Right Now

Before diving into settings, do these immediate steps to bring the temperature down safely:

• Remove any thick case, especially leather or silicone ones that trap heat.
• Turn off the screen and stop using the phone for 10–15 minutes.
• Move it out of direct sunlight and away from warm surfaces like a laptop or a car dashboard.
• Turn on Airplane Mode for a few minutes to cut all radios (Wi-Fi, cellular, Bluetooth).
• If the screen shows a temperature warning, turn the phone off completely and let it cool in a cool, dry place. Do not put it in the fridge or freezer—condensation can permanently damage it.

These steps address immediate overheating. For a long-term fix, continue with the settings changes below.

1. Update to the Latest iOS 11 Version

Apple released several point updates to iOS 11, each fixing bugs that caused overheating and battery drain. If you are still on iOS 11.0 or 11.1, you are likely experiencing known issues. Go to Settings > General > Software Update and install any available update. Even if you are on a later version, check again—Apple occasionally pushes small updates for security and performance. Updating is the single most effective fix for iOS 11 overheating because many of the early bugs were addressed in later patches.

2. Check Battery Usage and Background App Refresh

iOS 11 has a built-in battery usage screen that shows which apps are consuming the most power. Go to Settings > Battery and look at the list under “Battery Usage.� Apps that use more than 20% of your battery are likely also generating heat. Common culprits are social media apps, navigation apps, and games.

Next, disable Background App Refresh for the worst offenders:

1. Go to Settings > General > Background App Refresh.
2. You can turn it off entirely, or toggle it off for specific apps that you don’t need to refresh in the background.
3. Leave it on for essential apps like Mail or messaging, but turn it off for Facebook, Instagram, and games.

This prevents apps from downloading data in the background, which is a major source of heat when your phone is idle.

3. Disable Location Services for Unnecessary Apps

Location Services uses the GPS, Wi-Fi, and cellular radios simultaneously, which generates significant heat. Many apps request location access in the background. To limit this:

• Go to Settings > Privacy > Location Services.
• Review each app and set it to “While Usingâ€� instead of “Always.â€�
• Turn off Location Services entirely for apps that don’t need it (like a calculator or a note-taking app).
• Scroll to the bottom and disable “System Servicesâ€� that you don’t use, such as “Popular Near Meâ€� or “Location-Based Apple Ads.â€�

This reduces both heat and battery drain, especially when you’re on the move.

4. Reduce Screen Brightness and Disable Auto-Brightness Issues

The display is one of the biggest heat generators on any phone. In iOS 11, the Auto-Brightness setting is hidden under Accessibility. To manually control it:

1. Go to Settings > General > Accessibility > Display Accommodations.
2. Turn off Auto-Brightness if you find it’s making the screen too bright.
3. Then, from the Control Center, lower the brightness to about 50% or less.

Also, consider turning on True Tone (if your iPhone supports it) or using a darker wallpaper. While not a huge difference, every little bit helps when your phone is already hot.

5. Check for Faulty Apps and Update Them

Some third-party apps were not optimized for iOS 11 and caused excessive CPU usage. The app might be stuck in a loop, constantly requesting data or trying to sync. Check the App Store for updates—developers often release compatibility fixes. If an app remains problematic, delete it and reinstall it. You can also check the battery usage screen to see which app is using the most power; if it’s a non-essential app, delete it until the developer fixes the issue.

6. Reset All Settings (Not Your Data)

If you’ve tried everything and your iPhone still overheats, a settings reset can clear corrupted preferences that are causing the problem. This will not delete your photos, messages, or apps, but it will reset Wi-Fi passwords, wallpaper, and other system preferences. To do this:

1. Go to Settings > General > Reset > Reset All Settings.
2. Enter your passcode and confirm.
3. Your iPhone will restart. You’ll need to reconnect to Wi-Fi and re-enter your passwords.

This often resolves mysterious overheating issues that persist after other fixes.

Frequently Asked Questions

Is it normal for my iPhone to be warm during charging?

Yes, a slight warmth during charging is normal, especially if you’re using the phone while it’s plugged in. However, if it becomes uncomfortably hot, unplug it and check if the charger is Apple-certified. Non-certified chargers can cause overheating. If the phone is hot even when not in use, that’s not normal and you should follow the steps above.

Will a factory reset fix overheating?

A factory reset (Settings > General > Reset > Erase All Content and Settings) will fix overheating caused by software corruption or a bad app. It wipes all data, so back up first. If the phone still overheats after a clean setup with no apps restored, it could be a hardware issue, and you should contact Apple Support.

Can I use my iPhone while it’s overheating?

It’s best not to. Using the phone while it’s hot adds more load to the processor and can make the temperature rise further, potentially causing permanent battery damage. Stop using it, let it cool down, and then resume normal use after it’s back to a normal temperature.

Why does my iPhone overheat only when using certain apps?

Certain apps are more demanding than others—games, video editing, and navigation apps use the GPU and CPU heavily. If an app consistently makes your phone hot, it may be poorly optimized for iOS 11. Check for app updates, or try lowering the graphics settings in the app if available.

Does iOS 11 overheat on all iPhone models?

No, but older models like the iPhone 6 and 6s are more prone because they have older processors and smaller batteries. The iPhone 7 and newer handle iOS 11 better, but they can still overheat if you’re using heavy apps or have many background processes running.

Could a damaged battery cause overheating?

Yes, a degraded or damaged battery can overheat, especially when charging or under load. If your iPhone is hot even after a factory reset, or if the battery health is below 80% (Settings > Battery > Battery Health), consider getting the battery replaced by Apple or an authorized service provider.

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