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ToddH

macrumors 68030
Jul 5, 2010
2,654
5,287
Central Tx
Whenever I updated my iPhone, 14 pro max to iOS 17, when it was launched, it ran unusually warm when I took it out to take photos to check the changes in the image quality. It got hot pretty quick. Way warmer than it usually does. It has since calmed down, mainly because I’m on the iPhone 15 Pro Max now and not using it as much
 

BugeyeSTI

macrumors 604
Aug 19, 2017
6,912
8,773
Arizona/Illinois
If it is a SW bug why is it impacting 15 Pro only?
Plenty of complaints of 13/14 Pro's getting excessively hot during their release. It seems certain apps that aren't optimized for the new phones are causing issues.. My 15 ProMax has had absolutely no issues with heat during setup, charging or restoring.. I've watched YouTube for hours and run GeekBench6 multiple times in a row and no issues with excessive heat.. People need to realize this isn't affecting the majority of users only a small percentage..
 

Bkdodger

macrumors 68040
Jun 6, 2019
3,191
5,293
Plenty of complaints of 13/14 Pro's getting excessively hot during their release. It seems certain apps that aren't optimized for the new phones are causing issues.. My 15 ProMax has had absolutely no issues with heat during setup, charging or restoring.. I've watched YouTube for hours and run GeekBench6 multiple times in a row and no issues with excessive heat.. People need to realize this isn't affecting the majority of users only a small percentage..

100% in agreement with you.. I set up I charged yesterday was my first day with my iPhone 15 Pro Max I ran Google Maps today while it was on the MagSafe mount. My phone has been running cool no heat whatsoever…
 

zach-coleman

macrumors 65816
Apr 10, 2022
1,189
2,106
Probably tuning in how the A17 handles different situations, like when it switches from performance to efficiency cores and deciding when to throttle.

This being said, I’ve not had my phone get hot since I set it up. I am frustrated with how the news cycle works these days because it’s impossible to determine if this is an actual problem or just drama surrounding a few hyper niche situations being drummed up for clicks.
 

Bkdodger

macrumors 68040
Jun 6, 2019
3,191
5,293
Probably tuning in how the A17 handles different situations, like when it switches from performance to efficiency cores and deciding when to throttle.

This being said, I’ve not had my phone get hot since I set it up. I am frustrated with how the news cycle works these days because it’s impossible to determine if this is an actual problem or just drama surrounding a few hyper niche situations being drummed up for clicks.

All the news had me leery coming in and on the fence if I was gonna order it or not so I figured let me run it through the paces especially heavy work load first week since I dual phone carry … we shall see …
 
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TimmuJapan

macrumors 6502
Jul 7, 2020
367
647
If it is a SW bug why is it impacting 15 Pro only?
As power and tech savvy users know, software bugs do not infect all hardware--even of the same generation--equally... I don't work for Apple, but now, a week after initially writing the post below, Apple has commented, and the issue appears to be exactly what I guessed it was. The heat problem will be resolved shortly, I think. Explanation reposted below....

Original Post:
.......For those of us on here who are also mac users, we know that when new software is pushed out, sometimes a bug will work its way into the OS, and you get a “runaway process” that massively consumes CPU. When this happens to a Mac, the fans spin up for no reason, and the more tech savvy users will then check the activity monitor….. and low and behold, there is a runaway process eating up all of the CPU. …. for example, a normally tiny background process like “secd” will suddenly be consuming 400% of the CPU Non-stop, unrelenting.

You can have a million good macs, but the software bug will not affect them all uniformly. Some of them will start overheating, but others will not be affected by the software bug.

My guess is that this is what has happened at the iPhone 15 pro launch with iOS 17, because when I updated to iOS 17.1 public beta today, the heat issues that I was having on the 15 pro disappeared.

I think that those people who are postulating about about the 15 pro design or the A17 chip or whatever—they are over thinking this possibly. Software bugs and runaway processes do not infect all hardware equally, there is an element of randomness to it. I had three 2012 macs in my house running Catalina some years back, and one or two of them would occasionally get hit with a software bug and runaway process and subsequent overheating after an update, while another Mac with same processor would be totally fine.

The overheating issue for iPhone 15 pro is real, but my guess is that it will be fixed in a week or two, though, with a software update that doesn’t necessarily neuter the A17 pro, but just corrects some runaway processes that are eating up all the CPU power.
 
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GMShadow

macrumors 68000
Jun 8, 2021
1,909
7,737
I had some heat issues on my 14 Pro with 17.0 and 17.0.1 - it seems to happen less on .2, but it does still get cranky at times.
 
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Advent0903

macrumors member
Nov 11, 2021
85
83
yeah my iphone 14 pro max its like a grumpy old man nowdays . there is no issue on gaming and overall using of media social apps . but however when it does face time it heat up like a angry old man.( no overheat notification just warmer then usual in compare of other apps i use ) if they were really fixing it i hope 14 pro max benefits from it as well from the update .
 

zach-coleman

macrumors 65816
Apr 10, 2022
1,189
2,106
.......For those of us on here who are also mac users, we know that when new software is pushed out, sometimes a bug will work its way into the OS, and you get a “runaway process” that massively consumes CPU. When this happens to a Mac, the fans spin up for no reason, and the more tech savvy users will then check the activity monitor….. and low and behold, there is a runaway process eating up all of the CPU. …. for example, a normally tiny background process like “secd” will suddenly be consuming 400% of the CPU Non-stop, unrelenting.
100% chance this is what’s happening with Instagram. It has never been known as a pillar of quality...
 
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BenGoren

macrumors 6502
Jun 10, 2021
481
1,349
If it is a SW bug why is it impacting 15 Pro only?

Everybody loves a car analogy, so here’s one.

Ford releases a Mustang with a 400 HP motor. The next year, they release a new version with a 450 HP motor. Everything is a bit tweaked here and there — new fuel injectors, different camshaft, etc., etc., etc.

After they start selling the car, they get reports that the “check engine” light is coming on for some people living in the mountains. Turns out that the car is running hotter than they expected when pushed hard at high elevation.

So they send a crew to Denver to do a bunch of tests. They reprogram the ECU (the car’s onboard computer) to squirt more fuel and shift earlier when the atmospheric pressure is below a certain point. The car stops overheating, but fuel economy in the mountains is back to where it was with last year’s model. This isn’t a WOT (wide-open throttle) setting, to peak power isn’t an issue. Emissions are a bit dirtier, but still within required standards.

They release it as a Tesla-style over-the-air software update. And send the same update, along with some infotainment center tweaks, to all Mustang owners.

Since it was a “SW bug,” why did it only impact the 450 HP cars and not last year's 400 HP cars?

b&
 

NEPOBABY

Suspended
Jan 10, 2023
696
1,640
There is no 'heatgate'.

Previous phones can also get hot and experience bugs from inefficient resource hungry apps.

Apple can't test for the hundreds of different ways users will use their phones.

From what we can see on these boards, the few people who are experiencing heat are using apps like Instagram and TikTok to obsessively watch 15 year old girls dancing.

These kind of social media apps run a hundred trackers and javascripts and ads on top of a lot of disk writes.

It's also a new iOS. It's not big news to understand there will be some bugs.

I do not have any heat issue on the 15PM.

My main issue is my external SSD isn't detected most of the time and I can make the Files app freeze when I'm doing big transfers.
 
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Analog Kid

macrumors G3
Mar 4, 2003
9,063
11,867
Previous phones can also get hot and experience bugs from inefficient resource hungry apps.
Including MacRumors, as I recall... I think that turned out to be a Safari bug in the end? But it wasn't hardware related and MR seemed to trigger it in a way that no other sites were.

I remember enjoying the irony that everybody's phones were running hot because they were coming to this site to complain that their phones were running hot.
 

JonoNZ

macrumors regular
Apr 4, 2012
106
64
Auckland, New Zealand
My iPhone 14 PM got plenty hot with the iOS 17 beta programme, and ran fairly warm prior to moving to the 15 PM. For me, they’re behaving much the same.
 

Analog Kid

macrumors G3
Mar 4, 2003
9,063
11,867
If it is a SW bug why is it impacting 15 Pro only?

Smoking causes cancer, but my Aunt Ida smoked like a chimney and lived to 104. Sometimes bad things don't affect all units because the interactions are complex.
 

NEPOBABY

Suspended
Jan 10, 2023
696
1,640
Including MacRumors, as I recall... I think that turned out to be a Safari bug in the end? But it wasn't hardware related and MR seemed to trigger it in a way that no other sites were.

I remember enjoying the irony that everybody's phone's were running hot because they were coming to this site to complain that their phones were running hot.

Man I miss websites with only one or two little javascripts.
 
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