iPhone 14 Pro Max iOS 16.5.1 Battery Drain and Heat Issues

I have been having issues with my iPhone 14 Pro Max’s battery draining quickly and my phone getting noticeably warm after applying the iOS 16.5.1 update. I have to change some setting on my device like removing apps that could be misbehaving and changing how frequently apps, Mail, iCloud update. I’m familiar with Apple report system for issues like this and have submitted a report (I also encourage other do this if you are experiencing the same issue.) The only thing I haven’t done yet is restore my phone using my Mac, iTunes or Apple Devices (Preview) for Windows 11. I also sent feedback to Google/YouTube since I notice higher drain when using the latest version of the app. (Trying to cover all bases). My iPhone 14 Pro Max was purchased at the end of January 2023 so it isn’t that old about 5-6 months old and the battery’s “Maximum Capacity” reported by iOS is still at 100%. I just wanted to see if anyone else has had the issue or if it just me.

Thank you in advance for the help and for reading this very TLDR post.

Aaron

iPhone 14 Pro Max, iOS 16

Posted on Jun 30, 2023 8:02 PM

Top-ranking reply

SravanKrA

Community+ 2025

Level 10

431,070 points

Posted on Jun 30, 2023 8:19 PM

What I did is given below

Took a backup on iCloud (Which I do regularly)
Logged out of the Apple ID
Erase --> Erase iPhone - Apple Support (IN)
1. Keep eSIM Data was the option I chose (See the pic)
2. .
Set up my iPhone and restored it from iCloud Backup

I continued to have the same issue with the heating.

I repeated the above steps but this time I did not restore from the iCloud Backup. I set it up as a new iPhone.

Waited for 3 days. There is no heating issue, now.

Conclusion.:

There is no hardware issue!
This is not an iOS 16.0.3 issue
Some Apps or iPhone storage and some settings may be heating up the device.

Action Plan:

I will now slowly get my all data back one by one.
Using the elimination process I will try to find out which app or settings were causing this...

Now the heating issue isn't there anymore. I am adding apps one by one and keeping tab on the heating issue.

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.

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iPhone 14 Pro Max iOS 16.5.1 Battery Drain and Heat Issues

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