Multiple users have reported problems with the iPhone 15 series overheating while charging or using it for long periods of time.
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iPhone 15 series overheating issues crop up for early adopters
https://www.androidauthority.com/iphone-15-series-heating-issue-3367654/
Severe Apple iPhone 15 Pro Max thermal throttling reported as A17 Pro appears to push surface temperatures to 48°C during gaming - NotebookCheck.net News
https://www.notebookcheck.net/Severe-Apple-iPhone-15-Pro-Max-thermal-throttling-reported-as-A17-Pro-appears-to-push-surface-temperatures-to-48-C- during-gaming.753143.0.html
Scratches, Fingerprints, Overheating: iPhone 15 Pro Users Have A Lot Of Complaints
https://www.indiatimes.com/technology/news/scratches-fingerprints-overheating-iphone-15-pro-615931.html
Early iPhone 15 Pro Buyers Complain Of Overheating, Some Report Throttling And Discoloration Issues - Apple (NASDAQ:AAPL) - Benzinga
https://www.benzinga.com/news/23/09/34864785/early-iphone-15-pro-buyers-complain-of-overheating-some-report-throttling-and-discoloration-issues
Lower standards for A17 Pro could be behind iPhone 15 Pro thermal throttling issues - PhoneArena
https://www.phonearena.com/news/Lower-standards-for-A17-Pro-could-be-behind-iPhone-15-Pro-thermal-throttling-issues_id150917
Some users who got the iPhone 15 series released on September 22, 2023 have reported an issue where the device becomes excessively hot while charging or when used for a long time. According to Android-related media Android Authority, the iPhone 15 Pro Max with iOS 17.0.2 installed generates excessive heat 'when the device is being charged with a USB PD GaN charger that supports 65W output' and 'when the device is being charged with a USB PD GaN charger that supports 65W output'. This only applies to two cases: when opening a chat app or playing Reels on Instagram while using it for a long time.
``When charging the main unit with a USB PD GaN charger that supports 65W output'', ``iPhone 15 Pro Max becomes uncomfortably hot'' without a case. Even if you have a case on, you can still feel the heat through the case. However, it seems that this heat generation can be suppressed by using a charger with a lower output such as 15W.
In addition, since the iPhone 15 series has transitioned from a Lightning port to a USB-C port, it is necessary to select a USB-C cable considering charging speed and data transfer speed.
What you need to know about switching from Lightning to USB-C on the iPhone 15 series - GIGAZINE
It seems that the bottom of the main camera gets particularly hot when you open a chat app or play a reel on Instagram while using the device for a long time. Android Authority writes, ``I can't believe that it generates so much heat even though I'm not playing a game, not charging, and just connecting to Wi-Fi.''
Even on X, media reviewers and gadget influencers have reported excessive heat generation in the iPhone 15 series.
Max Weinbach, a writer for 9to5Google, posted, ``When I chat while charging my iPhone 15 Pro Max, the frame gets so hot that I can't hold it in my hand.''
My 15 pro max charging is getting so hot around the frame while chatting I just can't hold it
— Max Weinbach (@MaxWinebach) September 23, 2023
Seriously, it's too hot to hold while charging
Gadget YouTuber Harsh Punjabi posted, ``The iPhone 15 Pro generates a lot of heat. Shit, there's clearly a problem with this smartphone. I didn't expect Apple to cause such a problem.''
iPhone 15 Pro is heating a lot. Damn this phone has issues. Didn't expect Apple to drop the ball like this.
— Harsh Punjabi (@technolobeYT) September 23, 2023
Snazzy Labs said, ``The things I like about the new iPhone 15 Pro from the first day I used it are ``1: Slightly curved edges'' ``2: 5x zoom telephoto (iPhone 15 Pro Max)'' ``3: Previous model 3 things I don't like: 1: It gets hot quickly, 2: The battery life is incredibly average, and 3: The action button can only do one thing. He lists the advantages and disadvantages of the iPhone 15 Pro.
Favorite things about new iPhone Pro after first day:
— Snazzy Labs (@SnazzyLabs) September 23, 2023
1.Slightly curved edges
2. 5x zoom telephoto
3. Much lighter than prior model
Least favorite:
1.Gets real hot, real fast
2. Battery life seems incredible average
3.Action button can only do one thing
Shevon Salmon also posted, ``The iPhone 15 Pro Max gets very hot. It seems like it will burst into flames just by browsing social media.''
iPhone 15 Pro Max gets really hot easily. I'm just browsing social media and its burning up. pic.twitter.com/BwaAkGzl6A
— Shevon Salmon (@its_shevi) September 24, 2023
Tomi, a technology content creator, says, ``The iPhone 15 Pro Max gets very hot, so you definitely need a case. It's not like the device won't even heat up unless you do something intensive.''My favorite YouTuber 'I hope that the company will tell me the cause of this,' he said, claiming that the device overheats just with normal use.
iPhone 15 Pro Max gets so hot, you definitely need a case. You don't even need to be doing anything intensive for it to get hot ????…hope your fav YouTubers tell you this
— Tomi (@GadgetsBoy) September 24, 2023
Rjey, a technology content creator, posted, ``My iPhone 15 Pro Max gets so hot sometimes I can't even hold it when I'm using it without a case.''
The iPhone 15 Pro Max gets so hot sometimes, that if you're using it caseless you can't even hold it. pic.twitter.com/cZ9dAA1186
— Rjey (@RjeyTech) September 23, 2023
Ian Zelbo of Apple-related media 9to5Mac also posted, ``My iPhone 15 Pro Max is too hot to touch while fast charging.''
Jeeez my iPhone 15 Pro Max is almost too hot to touch while fast charging rn…
— Ian Zelbo (@ianzelbo) September 25, 2023
Even with iPhones other than the iPhone 15, it seems that the device is particularly likely to heat up within 24 hours after initial setup. The reason is that all apps are initialized during initial setup and sign-in is performed from there. However, it has been reported that even after the first 24 hours, the iPhone 15 series still gets excessively hot.
Below is a thermal image taken with a thermography camera after benchmarking iPhone 15 Plus and iPhone 15 Pro Max. The photo was taken by BullsLab , a Korean gadget YouTuber.
Below is a thermal image of iPhone 15 Plus, the left side is the front side and the right side is the back side. The maximum temperature on the front side is 42.8 degrees, and the back side is quite hot at 46.7 degrees.
Below is a thermal image of iPhone 15 Pro Max, the maximum temperature of the front side is 44.2 degrees and the back side is 46.2 degrees.
Technology media PhoneArena said, ``We found that the iPhone 15 Pro and iPhone 15 Pro Max become abnormally hot, but this may be due to Apple's low standards for the installed SoC A17 Pro. There is,” he pointed out.
A17 Pro is a chip manufactured using TSMC's 3nm process. Apple's A series chips used the 5nm process from 2020 to 2022. Due to changes in process rules, the A17 Pro is said to have a 10% faster CPU and 20% faster GPU than the previous generation A16 Bionic.
It has been pointed out that defective products have been occurring at a certain rate for the A17 Pro even before its release, and some have pointed out that Apple has lowered the standards for the A17 Pro. PhoneArena points out that ``TSMC may have increased the wattage of the A17 Pro'' in order to achieve the performance Apple wants. PhoneArena claims that this is the cause of excessive heat generation.
TSMC has a ``contract not to claim for defective products of chips manufactured using the 3nm generation process'' with Apple, what is the reason? -GIGAZINE
by Business Durham
However, as shown in the thermal image taken by BullsLab mentioned above, excessive heat generation has been confirmed on the iPhone 15 Plus as well. The SoC installed in the iPhone 15 Plus is A16 Bionic, not A17 Pro, so it would be premature to think that the excessive heat is only caused by A17 Pro.
Please note that at the time of writing this article, no comments were received from Apple regarding the heat generation issue of the iPhone 15 series.
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