Iphone 17 overheat problem after 26.3

📱Facing iPhone heating issues? Here's what worked for me on my iPhone:

1️⃣ Backup on iCloud/iTunes

2️⃣ Log out of Apple ID

3️⃣ Erase (Keep eSIM Data)

❌ DO NOT restore from backups! Set up as a new iPhone. Wait 2-3 days - no issue! That Indicates...

✅ No hardware/ iOS issue

Now...

📦 Restore data gradually

🔍 Find app/settings causing heat

My experience says this is purely caused by some third-party app that you may have installed.

I am not aware of the ambient temperature in which you are using the iPhone. However --> Keeping iPhone, iPad, and iPod touch within acceptable ...

Store the device where the temperature is between -20º and 45º C (-4º to 113º F). Don’t leave the device in your car, because temperatures in parked cars can exceed this range.

Use iOS devices where the ambient temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might cause the device to change its behavior to regulate its temperature. Using an iOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause the device to turn off. Battery life will return to normal when you bring the device back to higher ambient temperatures. Using an iOS device in very hot conditions can permanently shorten battery life.

argos5 wrote:

lobsterghost1 wrote:

iPhone 15 Pro was discontinued in September of 2024, nearly 2 years ago. What is your current Battery Health? To check, open Settings > Battery > Battery Health - if it is 80% or less, the useful life of the battery has been used and it would be time to pay Apple to replace the battery. When batteries are failing, they have to work harder and when a battery works harder, it generates heat. This is called Thermal Dynamic Exchange.

Also, why haven't you updated to iOS 26.4.1, which is the current iOS version?

Finally, you suggest your phone is overheating. Let's define overheating. When an iPhone actually overheats, it shows a red thermometer on the screen and tells you the phone can't be used until it cools down. If you're not seeing that, you're phone may be running warm, but it's not overheating. Using Cellular and 5G in particular make a battery work harder than Wifi. Cellular in general uses more power and when you use more power, you generate heat.

First. Battery Health: Normal. Maximum Capacity: 87%

Second. I got the ping for the update today, so I'll go ahead and update.

Third. Its overheating to where it says I can't use the phone due to overheating.

I wouldn't be here if this wasn't a situation I could figure out myself. I would say that me installing this app, Noble Life, which has been tracking my Screen Time, because its an incentive for me to gain money by not using my phone, while also being my new carrier, could be a factor. I just uninstalled it. So we'll see what happens after this new patch AND having uninstalled the Noble Life app.

Let us know if the Noble Life app contributed to your issues. If nothing changes, you should schedule an appointment at your Apple Store Genius Bar to have your phone tested.

lobsterghost1 wrote:

iPhone 15 Pro was discontinued in September of 2024, nearly 2 years ago. What is your current Battery Health? To check, open Settings > Battery > Battery Health - if it is 80% or less, the useful life of the battery has been used and it would be time to pay Apple to replace the battery. When batteries are failing, they have to work harder and when a battery works harder, it generates heat. This is called Thermal Dynamic Exchange.

Also, why haven't you updated to iOS 26.4.1, which is the current iOS version?

Finally, you suggest your phone is overheating. Let's define overheating. When an iPhone actually overheats, it shows a red thermometer on the screen and tells you the phone can't be used until it cools down. If you're not seeing that, you're phone may be running warm, but it's not overheating. Using Cellular and 5G in particular make a battery work harder than Wifi. Cellular in general uses more power and when you use more power, you generate heat.

First. Battery Health: Normal. Maximum Capacity: 87%

Second. I got the ping for the update today, so I'll go ahead and update.

Third. Its overheating to where it says I can't use the phone due to overheating.

I wouldn't be here if this wasn't a situation I could figure out myself. I would say that me installing this app, Noble Life, which has been tracking my Screen Time, because its an incentive for me to gain money by not using my phone, while also being my new carrier, could be a factor. I just uninstalled it. So we'll see what happens after this new patch AND having uninstalled the Noble Life app.

If you haven’t, try turning optimized charging off for a few days. My phone was getting so hot on and off. While on charger and burning hot, I turned that setting off in battery setting and within minutes you couldn’t feel any warmth coming off the phone and it was still on charger.

argos5 wrote:

I came here to confirm your experience, Erick. I know Sravan feels this is a generalized issue, but this is something I personally experienced based on three factors: 1) my phone is overheating when on 5G (not wifi), 2) it was after the 26.3.1 updated for me last week, 3) it was after i switched from T-Mobile to Noble Mobile four days ago. when those three factors occur, that's when it overheats.

Just now, I got off the phone with my buddy and his mom. His mom isn't tech savvy and barely uses her phone, but her phone started overheating after the 26.3.1 recently, she had to reachout to Apple Support and they're currently at the Apple Store to diagnose it.

This isn't an isolated incident and thank you for creating a thread for us to rally around.

I have an iPhone 15 Pro.

iPhone 15 Pro was discontinued in September of 2024, nearly 2 years ago. What is your current Battery Health? To check, open Settings > Battery > Battery Health - if it is 80% or less, the useful life of the battery has been used and it would be time to pay Apple to replace the battery. When batteries are failing, they have to work harder and when a battery works harder, it generates heat. This is called Thermal Dynamic Exchange.

Also, why haven't you updated to iOS 26.4.1, which is the current iOS version?

Finally, you suggest your phone is overheating. Let's define overheating. When an iPhone actually overheats, it shows a red thermometer on the screen and tells you the phone can't be used until it cools down. If you're not seeing that, you're phone may be running warm, but it's not overheating. Using Cellular and 5G in particular make a battery work harder than Wifi. Cellular in general uses more power and when you use more power, you generate heat.

It surely is not after iOS 26.3 because...

I conducted a thorough search of this forum and uncovered numerous posts detailing similar issues across various iOS updates. This suggests that iOS updates may not consistently be the root cause. Below are a handful of examples extracted from the search results:

The links I've found suggest that the reason for battery drain may not be solely due to iOS updates, but rather, it could be influenced by how an iPhone is utilized.

• Re: Is the heating issue on iPhone resolved with iOS 17.0.3 Update?
• Overheating problem on my iPhone since updating to iOS 17
• Re: ios 17 over heating
• updated to ios 16. now my phone is overheating
• Re: Iphone 11 IOS 16.3.1 Burning hot
• Iphone 12 overheating
• Re: why is my iphone xs overheating?
• My iPhone 7 overheated
• My iPhone 11 overheating
• After 16.3 update my device is overheating I’m just open safari and watch YouTube video after some minutes my device is starting to heats 😔...
• new i pad 12inch overheating nearly all the time
• Hi, i have the new iphone 14 for a month now. Still 100% battery heatlh but my question is, why is my iphone turning off and showing that its overheating even tho im only charging it or playing a game without any other games in the background? And when it turns off it comes back on and shuts down again and repeats ir for about 20 minutes. and when i turn on hotspot after 5 minutes it shuts off the phone again. maybe its because of a water damage issue? Because before 3 days i poured water...

The above issues span many models, and iOS updates suggest the issues reported by many are device-specific and erroneously attributed to iOS updates.

Overheating issues are not always the fault of iOS updates!  Many things can cause phone problems.  If you tell people you think it's an iOS update, it might make it harder to fix or find a solution for the real issue.

Remember, the right question often leads to the solution!

Was/Is your device Jailbroken? If that's the situation, please be informed that attributing the issues to iOS updates may not be accurate.

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. The majority of the issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: OS — iOS 26, About iOS 18 Updates, About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

I came here to confirm your experience, Erick. I know Sravan feels this is a generalized issue, but this is something I personally experienced based on three factors: 1) my phone is overheating when on 5G (not wifi), 2) it was after the 26.3.1 updated for me last week, 3) it was after i switched from T-Mobile to Noble Mobile four days ago. when those three factors occur, that's when it overheats.

Just now, I got off the phone with my buddy and his mom. His mom isn't tech savvy and barely uses her phone, but her phone started overheating after the 26.3.1 recently, she had to reachout to Apple Support and they're currently at the Apple Store to diagnose it.

This isn't an isolated incident and thank you for creating a thread for us to rally around.

I have an iPhone 15 Pro.

"only use it for instagram, tiktok, youtube, or whatsapp"

They are all heavy battery users!

When you attribute every glitch or slowdown, or feature availability on your device to an iOS update, you risk overlooking other potential causes that may be specific to your hardware or settings. Updates often become the “easy scapegoat,” but not all issues originate from the operating system itself.

I understand your explanation in response to this question that was posed.

My question to you is why do, or should we even have to go through this on a brand new iPhone 17 pro max at all.

I have gotten an Upgrade every year and it seems like this year, and this phone is the worst that I’ve dealt with. With all these problems that are happening.

Especially these new updates that Apple’s rolling out are junk. I can’t use my block function at all on contacts or mail.

Yet apple didn’t have a problem charging an uptick of $200 from last year’s iPhone 16 pro max that I had.

Kind of ridiculous this super expensive pile of junk overheats. Apple has been making iPhones for a long long time yet they can't get this right it's not background apps it isn't.

If Steve Jobs are alive now there be a team in the courtyard at Cupertino and many many many many so experts would lose their heads. Unbelievable it's management useless.

So have to come back to Apple phones for the 15 and the 17 pro Max that's it. I don't care if it gets smashed to me. It's unbelievable that in this day and age and they charge this much for it but it overheats. How can you get it so wrong and confidence I sleep at the wheel useless Engineering or is it cost-cutting or is it some background thing that is part of the spyware? If you look into it the only phones that the Israel army people are allowed to use their iPhones. I wonder why technically you're supporting genocide if you have an iPhone aren't you?