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Part of the problem is the titanium. It is a major conductor of heat. It absorbs heat very easily and is slow to cool down.
If this were the main cause, would it not be a universal issue instead of one that seems to be related to specific actions or use cases? (Full disclosure: I have a launch day 15 Pro and have not had overheating/heating issues.)
 
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Did anyone ever confirm this is happening to people that didn't update to 17.0.2 before setting up? And if they update later it doesn't resolve?
 
Am I the only one whose iPhone 15 heats up quite a bit while making a simple facetime call?
 
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Am I the only one whose iPhone 15 heats up quite a bit while making a simple facetime call?
I haven't noticed that yet, but I'll keep an eye out. Just now, though, I finished an 18-minute FaceTime Audio call on my iPhone 15 Pro (using AirPods Pro), and it's still completely cool to touch. The battery went from 78% to 76% during that time.
 
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I can vouch for the fact that iPhones can get hot during an iCloud restore. It’s a temporary condition, but perhaps Apple could throttle restores based on temps.
 
Got my 15PM on launch day, setting it up seemed cooler than any of my previous phones. I did get it a bit warm when I was on FaceTime and watching YouTube at the same time. It also gets a bit warm when outside but that’s expected. Otherwise it’s cool as usual. Absolutely love it so far and the battery for me has been phenomenal. I have never ever had a phone that didn’t need any charging during the day.

I will add, my phone is 1TB and I am using 420GB of space. That all happened during setup, when the phone automatically downloaded my entire 30K song library from Apple Music. Still didn’t overheat any worse than anything else I’ve owned.
 
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My 15PM and my brothers are OK so far.
Hopefully it’s not a hardware issue because Apple would rather pay a fine instead of fixing the issue.
 
I've only found it to get a bit warm when wireless charging, but my 13 Mini did that too. I've been thinking about not using wireless charging to see if that has any affect on the battery health.

I haven't really done anything intensive with my phone as I'm not a gamer, just an avid YouTuber but haven't noticed any issues yet.
 
I wonder if there is any truth to this info about the TSMC 3nm chipset POSSIBLE deficiencies?

Starting around 11:00

 
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I'm a bit concerned since I just did a 20-minute phone call, and felt it 'very warm' on the screen. It was sitting at a desk, on speakerphone, battery only. I'm also at 75% from a full-charge since 7am, and haven't done any gaming. My concern is longevity and battery life.

I've never felt that in 2yrs on my 13 Pro Max. It would get warm if you charged it and played games at the same time. That's understandable.

Thoughts? The phone is fast, it's finally USB-C, but I'm worried spending $1500 on a phone. It's almost like the i9 99c problems. I'd assume Apple could do a firmware fix to throttle it down.
 
There's no heat gate.

It's a new phone so while people are setting it up they test out all the new power features to the extreme. OS optimisations are still rolling out.

Same thing happens every year and not just with iPhones but computers also.

My Sandisk portable SSD gets hotter than my iPhone 15 Max.

But nobody went around saying Sandisk SSDs had a heat gate.

Even though the Sandisk SSD is not even a powerful device.

We live in the yearly cycle of clickbait and short term memories.

And some people are stupid enough to fall for it.
 


iPhone 15 Pro and Pro Max overheating concerns continue to make headlines this week, with the topic highlighted by The Wall Street Journal and Bloomberg.

iPhone-15-Pro-lineup.jpg

Both of the reports document anecdotal complaints from customers, and outline potential causes, but it's unclear how many devices are actually affected. Bloomberg said the overheating could be caused or compounded by the iPhone's setup process, suggesting that the higher temperatures might sometimes be a temporary condition.

The Wall Street Journal quoted a customer who felt his iPhone 15 Pro Max remained hotter than his iPhone 13 Pro Max a few days after setting up the device:The Wall Street Journal's Joanna Stern said her iPhone 15 Pro Max did heat up while charging and performing processor-intensive tasks, such as gaming, but she said her iPhone 14 Pro Max reached similar temperatures in the same test. During typical everyday usage, Stern said the temperature of both devices was in a normal range. Many customers on social media have also said their iPhone 15 Pro is not experiencing any overheating, and the lack of hard data makes it unclear if there is a widespread problem.

On Wednesday, Apple supply chain analyst Ming-Chi Kuo said the titanium frame on iPhone 15 Pro models negatively impacts thermal efficiency. Kuo believes that Apple will likely address the issue through software updates, but he said improvements may be limited unless Apple lowers the performance of the A17 Pro chip.

Apple has not commented on the concerns, and it's unclear if the company will actually make any software optimizations in future iOS updates.

Article Link: iPhone 15 Pro Overheating Concerns Highlighted in Two More Reports
A quick google on thermal conductivity for titanium vs steel yields negligible differences.

Titanium 12 W/k/m
Stainless steel 15 W/k/m

Aluminum’s TC is 235 W/k/m so like 20x more efficient.

So no, the change to titanium probably doesn’t account for the higher temps. It’s probably the indexing that the phones do after setup which can take up to a couple days.
 
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It was a bit warm for the first few days while downloading etc. Now seems cooler than the 14. Battery is a little better as well.
I do wonder if they didn't wait or didn't update to latest OS.
 
Isn’t the 15 Pro/Max case aluminum? Just the sides are titanium?

In any case, the 15 Pro Max has structural issues. Bend it a little, and the back glass breaks. And even though unrelated, but related to quality, the PVD coating on the pro models is a joke. Only natural titanium will stay looking good, the coating on the other color variants scratches away very easily, most visibly on black & blue.
 
No heat or battery issue with my 15 Pro. I guess I must be part of the 99% that have no issue. Of course, if you sell 1 million devices and 1% have an issue, that would be 10,000 people to provide anecdotal stories of a major issue. More than enough people to get a few quotes into some news stories.
 
I'm definitely experiencing heat issues. Had several generations of iPhone over the years and this is the first I've come across it. My iPhone 15 Pro was received on release day (9/22), so pinning the cause on the setup process seems implausible now that we're almost a week out. General use of apps and web browsing generates some noticeable heat, but nothing too hot. The most concerning is when telephone calls are placed or received. Within a minute or so the phone becomes hot to the touch, and extended phone conversations are uncomfortable since the device is pressed up to my ear and cheek.
 
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Launch day iPhone 15 Pro here. I only noticed warm to touch during the initial phone to phone transfer stage while it's connected to power at the same time. Since then, I wish it generates some heat as the outside temperature is much cooler now.
 
Most people don't realise 35-45 degrees feels HOT but is within normal operating range
 
I'm a bit concerned since I just did a 20-minute phone call, and felt it 'very warm' on the screen. It was sitting at a desk, on speakerphone, battery only. I'm also at 75% from a full-charge since 7am, and haven't done any gaming. My concern is longevity and battery life.

I've never felt that in 2yrs on my 13 Pro Max. It would get warm if you charged it and played games at the same time. That's understandable.

Thoughts? The phone is fast, it's finally USB-C, but I'm worried spending $1500 on a phone. It's almost like the i9 99c problems. I'd assume Apple could do a firmware fix to throttle it down.

My phone is only getting hot and draining the battery during phone calls, too. However, I just tried a suggestion from another forum user and reset all my network settings followed by a restart. After a 1 hour test call, my phone stayed a lot cooler and the battery only dropped 6-7%.

Previously, my phone dropped 23% on a 35 minute call.

I'm hoping this has solved the bug, I do recommend anyone else experiencing the "hot call" issue to try this.
 
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