iPhone 15 overheating

Hi everyone. I’ve recently purchased the new iPhone 15 pro max and it is heating up even when I’m not using it.

I was wondering if anyone else is having this issue or if it maybe a setting that is causing it that I can turn off?

Any advice is appreciated. :)


[Re-Titled by Moderator]

iPhone 11 Pro, iOS 16

Posted on Sep 22, 2023 6:04 PM

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Question marked as Top-ranking reply

Posted on Sep 24, 2023 9:36 AM

For all of you:


Do a simple Forced Restart on your new iPhone by:


  • Press and quickly release the volume up button
  • Then immediately press and quickly release the volume down button
  • Then immediately press and KEEP HOLDING the side power button and KEEP HOLDING it past the swipe to shut down and KEEP HOLDING it until the Apple Logo appears, then let go


Sign back in with your passcode when the phone prompt you and let the phone settle down over the next couple days. If you transferred a LOT of data, it can days for the indexing process to complete. There is likely NOTHING wrong with your phones.

935 replies

Nov 10, 2023 7:29 AM in response to rainbowskye3707

rainbowskye3707 wrote:

This is happening to me now. My battery keeps draining and it’s super annoying. I’ve tried everything even taking the case off completely and it still just over heats all the time. I live in wisconsin so it’s winter and cold right now outside so that’s not even the issue. (15 pro max)

What did they say at the Genius Bar, when you surely showed them your phone? And at a minimum, you surely are current with updates, right? This issue was addressed with iOS 17.0.3 and we are now on iOS 17.1.1

Nov 16, 2023 7:08 AM in response to rjferguson90

Apple did say that when you get a new iPhone 15, for the first few days, while it's doing it's normal indexing and putting everything in place, you can fully expect it to run warmer than you may be accustomed to.


After a few days, it should run cooler and iOS 17.0.3 was specifically released to address the overheating issues some people experienced (but not all people did, like me, for example).

Nov 18, 2023 5:46 AM in response to riana179

If a specific app is causing a heating issue, it likely is the app not being fully optimized for iOS 17.


Have you updated your new iPhone to iOS 17.1.1? If you haven't do that immediately.


And if the phone is brand new, it takes a couple days for the phone to fully index the billions of bytes of data, meaning it's working hard under the hood at first, while your doing other things to test it out, which will cause it to heat more than you might expect.

Jan 19, 2024 7:08 AM in response to raina38

Then the best thing to do is Call Apple Support, you likely will be routed to a L2 Advisor, and they can run diagnostics. I encourage anyone on this forum to come here after trying the evident easy troubleshooting steps. The L2 Apple OTA can gather logs and determine fast the number or type of heat cycles...It not only helps the user but also Apple to see if, for example with a new iOS and a new hardware, software (3d party app) is not causing issues. Folks, I could overheat any phone, any iPhone really, in certain circumstances and usage. Some app makers delay developpment until having heir hands on the hardware, or lag in R&D etc. If someone here says that WhatsApp for business caused issues, then it was the App for him. On the other hand I had apps causing issues, and a reinstallation fixed their ressource use... Some apps for example have aggressive cloud backups. I recall when using Microsoft OneDrive, on my iPhone, its slow aggressive indexing and uploading was so much I turned the app off...

Sep 25, 2023 5:10 AM in response to m.voong

Apple touts a Smart Data feature that’s specific to its 5G phones that will automatically switch between 4G LTE and 5G networks based on how you’re using your device. However, you may find that your iPhone 15 Pro battery drains faster than it did before. If you don’t want to sacrifice battery life for faster 5G speeds, shut it down. You can always turn 5G back on when you want it, or when service in your area improves.


To turn off 5G on your iPhone, forcing it to always use 4G LTE (even if you have 5G coverage), open the Settings app, then go to Cellular > Primary > Voice & Data and tap LTE.


Alternatively, if you want your iPhone to exclusively use a 5G connection when available, you can select 5G On.


Found at https://iphonegeeks.com/iphone-15-pro-explain-how-to-fix-battery-drain-issue/

Sep 28, 2023 7:03 AM in response to Ruthy-Roo

Is it an iPhone 15 thing? I mean, since iOS 17 update, my iPhone XS Max has been running very hot, it doesn't cool down unless it's locked and nothing is happening on it. 10 mins of use (add a Calendar event or logging my mood on Health App, simple tasks) would kill about 15% of battery, battery health went down after a few weeks of usage from 82% to 79% .. I've never had this heat/battery drain problem before on the same device.

Also, iPad Pro M1, it's been always cold to touch (very cold), now it gets warm on simple tasks after iOS 17. Just warm though, can't say it heats up.

My watch (Series 5) also, after WatchOS 10 update, it became like a wrist furnace. It literally just fires up randomly on my wrist without anything I do, and not to mention, battery life just dropped under 80% after the update. First to 73% and now on 75%. And it's hot like half the time, never felt that heat on my wrist before WatchOS 10.

I have to charge my watch twice and my phone 2 or 3 times a day now after the update. And it's been like that since the Betas.. I've factory reset / restore the iPhone and the Watch once the official release was here thinking it might help out, but nothing. And I'm sure it's not indexing, I mean, it's been a month now or so, indexing for a month?

Also I've updated all of the Apps, and those who didn't get updated after iOS 17 release are currently offloaded. So it's not an app optimization thing either.

Reading a lot of the comments here makes me wonder if it's 15 thing, a lot of you are stating exactly the same symptoms I'm having with older devices. Also, I have to mention, software is running crazy stable on the devices I've mentioned, I mean, drastically more stable than iOS 16. Which makes it sound like the processors are pushed to their limits for performance which is affecting battery and causing heat? Just speculating.

And yeah, let's hope it's just software after all that would all be fixed with an update. I was planing to jump to 15 as soon as it's available in my country, so hopefully I wouldn't be purchasing a malfunctioning hardware after 5 years of wait.


Advice: For those who'll keep their devices and wait for an update that may or may not fix things. Try to do everything so as not to kill battery health too early. Charge with slow wired chargers like the old days, wireless and fast charging generates heat. Don't use your phones while charging like ever (for now), and keep it always in cool places at least while you're using it. Hopefully an update would fix things up and you'd be back to your normal usage behavior.

Sep 28, 2023 4:31 PM in response to Jaytheman56

Jaytheman56 wrote:

I don’t leave apps running in my background… this is a issue apple has to fix

If you mean you're force quitting apps, that could be a contributor to your problem, albeit a small one. Force closing apps cause your phone to use more battery life and processor cycles to completely relaunch them then it would to simply unsuspend them.


If you want to minimize apps doing things in the background, go to Settings>General>Background App Refresh and disable it, either for all apps or apps you definitely know you don't want doing much in the background.

Sep 29, 2023 12:26 PM in response to Ruthy-Roo

I just read an article from a trusted publication, which suggests the issues may be coming from people who use Instagram on their iPhone. How many of you who are having heating issues use Instagram? I have absolutely NO heating issues. I don't use Instagram. If you are a regular user of Instagram, you might want to delete the app and then see how your iPhone does. If this is an Instagram caused issue, you can bet the fact it's now been written as such in a trusted publication, it will get Instagram and Apple's attention.

Sep 29, 2023 5:06 PM in response to mutlu_

mutlu_ wrote:

15 Pro 256GB owner here. I experienced the same overheating issues within the first 3 days of my purchase, but now it's pretty good. I tested it by playing Call of Duty and Genshin Impact for a total of one hour and didn't notice any overheating problems. Other apps like Instagram, Safari and Camera works well too. However, I'm still worried and following this thread for the latest news.

What you've described makes total sense. You gave the phone the time to do its internal housekeeping and now it's operating as it should. If only people wouldn't turn them on and then claim their phone is defective in the first day or two because it's warm or even hot in some situations. It takes time for a new phone to settle in.

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iPhone 15 overheating

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