iPhone 18 Pro overheating

Some activities such as charging or a lot of computational activity (e.g., video), generate heat. Some warmth is to be anticipated.* ** "Keep your iPhone, the power adapter, and any wireless charger in a well-ventilated area when in use or charging.”*** Read this article about keeping an iPhone or iPad within acceptable operating temperatures - If your iPhone or iPad gets too hot or too cold - Apple Support

In terms of usage, changes in software such as upgrades or new apps may introduce new features which may add to power drain and heat generation. Check Settings > Battery to see if there are apps running that use a lot of power. If there are, decide if you can turn off a service such as Settings > General > Background app refresh when an app is in the background, or Settings > Privacy > Location Services. Read this support article to learn about the battery health feature —> iPhone battery and performance - Apple Support

If you have just updated system software, read posts about indexing in this thread: iPhone 15 overheating - Apple Community

An iOS update may require subsequent reorganization of files and a short term increase in heat and battery drain until the task is done. Wait a few days and see if the issue persists.

About Apple software updates - Apple Support

says: “Immediately after completing an update, particularly a major release, you might notice a temporary impact on battery life and thermal performance. This is normal, as your device needs time to complete the setup process in the background, including indexing data and files for search, downloading new assets, and updating apps.”

If you think there is a problem with a device, have Apple inspect it. Go to this page to find your nearest Apple Authorized Service Provider (AASP) or Apple Authorized Distributor (AAD) --> https://locate.apple.com/country

How to make a Genius Bar appointment

1. Go to Genius Bar Reservation and Apple Support Options - Apple

2. Go to "Get hardware help".

3. Select your hardware and continue selecting options requiring replacing parts until you see "Bring in for Repair"

4. Sign in with your Apple ID

*"Your iPhone might get slightly warmer while it charges." - from: How to use your MagSafe Battery Pack - Apple Support

iphone/important-safety-information-iph301fc905/ios

** Posts by contributor Lawrence Finch explaining the basic physics. iPhone 15 Pro heating up with protective … - Apple Community and this one about overheating Why is my iPhone overheating? - Apple Community

***Section about "Prolonged heat exposure" in this support article --> Official Apple Support

Like the 17 Pro’s before it, your 18 is doing a lot of background task such as indexing, syncing and optimization. Apple notes this if you open your Settings app and/or Battery settings and you’ll see notices. Tap the arrow and follow the link to an article.

About Spotlight indexing and search results on Apple devices - Apple Support

A forced restart may help as well.

Force restart iPhone - Apple Support

To speed up the process, charge your iPhone overnight, connected to WiFi and locked. Give 2 to 5 days depending on the amount of data on your device.

Kforrester90 wrote:

Mine too. Just called Verizon about it and they were clueless. But I see this is a common issue. Looking for an authorized Apple place to inspect the phone-I don't want a fire. If the deals seem too good - they are.

Find a location here by scheduling service.

Genius Bar Reservation and Apple Support Options - Apple

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As for the device getting warm after the update to iOS 27, that is a common issue on every device and will continue for about 5-7 days following the update/setup of a new phone. Not only is there increased heat, but also increased battery drain, and some UI lag while these background processes continue to index the files. Apple describes what you should expect here in their support article. You can look back on this support article and see those same posts after every update, including iOS 26, iOS 18, iOS 17, etc, and following every new device release for that period of time after setup.

About Apple software updates - Apple Support

In order for those background processes to complete quicker, it is best to charge your phone all night, every night and have it connected to WiFi.

Mine too severely began overheating. The assumption it is indexing or background tasks is fun except when it’s burning your calloused hands and you need to put it down. It’s a design flaw at best measuring a temperature that isn’t the one on the exterior, and it is objectively overheating and not registering at worst.

Mine too. Just called Verizon about it and they were clueless. But I see this is a common issue. Looking for an authorized Apple place to inspect the phone-I don't want a fire. If the deals seem too good - they are.

New iPhone 18 Pro is too hot to handle! I have charged it fully while locked overnight. I have shut off the phone for some time and restarted it. It soon gets hot upon using again. This is a brand new phone recently purchased.