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ENANOMARCIANO
User level: Level 1 (12 points)

Extremely Hot IPhone 18 ProMax

My Brand New IPhone 18 ProMax EXTREMELY HOT, My IPhone 15 Pro NEVER DID THAT IN OVER 4 Years. WHATS GOING ON HERE

Posted on Oct 16, 2026 11:40 AM

2 replies

Mac Jim ID
User level: Level 10 (105,996 points)

Oct 16, 2026 12:20 PM in response to ENANOMARCIANO

Since you mentions it being EXTREMELY HOT with that emphasis, I would agree with MrHoffman. The phone does contain internal sensors to monitor heat and if it is overheated, you will see a thermometer on your screen explaining this overheat condition, as long as those sensors are working correctly.


Certainly any iPhone that is setup/updated to iOS 27 is going to be warmer than usual for about 5-7 days while files are being indexed in the background. Apple also says that not only should you expect increased heat, but also increased battery drain and some UI lag while this indexing is being performed.

About Apple software updates - Apple Support


The best way to let those background processes complete to index the files is to charge your phone all night, every night while the phone is connected to WiFi.


If there is by chance a stuck process causing increased heat, I would have recommended performing a Force Restart.

  • Press and quickly release Volume Up
  • Press and quickly release Volume Down
  • Press and HOLD Side button until the Apple logo appears. It could take up to 15 seconds while holding the side button before you will see the Apple logo and you have to ignore anything else you see on the screen during that time, including the prompt to Slide to Power Off.


MrHoffman
User level: Level 10 (169,253 points)

Oct 16, 2026 11:52 AM in response to ENANOMARCIANO

Shut it down if you can, stop using it, place it somewhere fire resistive, and contact Apple Support.


Contact Apple Support - Apple Support


Originally posted at discussions.apple.com/thread/256377430