iPhone battery draining after iOS 18 Update

My iphone 13 pro max battery draining drastically after updating to iOS 18. My Battery Health reduced to 77% just in a week of time from 84%. Unbelievable. Apple made this update to drain the batteries so that people choose to new phone to increase the sales or what????

This has been common issue on all iphones i have used since more than 10 years.

really disappointing Apple.

I erased the phone (15 pro max) and started over. Nowhere near as warm when charging. Two hours since last charge, at 99%. I'll keep watching it but so far, so good. The four hour mark will be the next test as it was dropping to 76%. I deleted a TON of apps and turned off a lot of background processes. Granted, this should not have to be done and hope Apple finds a solution vs us trying to get janky with it.

It’s 510 am. Last time I charged the phone was 230 pm the previous day. At 82 % after normal use. Erasing the phone and keeping core apps and a few others seems to have fixed my issue.

agree with the point on all this learning stuff.

is it really necessary?

Me facing same issue after updating to iOS 18 and i am waiting until iOS 18.0.1 but still facing same issue. So i manage to send my iPhone 14 Pro Max to Apple center to change new battery because first i think it was my phone battery issue (85% Battery Health). But then i'll decided to trade in my 14 Pro Max to brand new iPhone 16 Pro Max and guess what, i felt same battery performance on my new 16 Pro Max same as my previous 14 Pro Max with 85% Battery Health. So for sure 100% this battery drain issue come from iOS 18 update not from device itself.

My wife had zero problems when her 13 mini ran on 17.6, 17.7 then on 18.0.1. After updating to 18.1 the battery life halved or so.

I restored her iphone to 17.7, zero battery problem then, later to 18.0.1, zero battery problem again.

I am happy that not IOS 18 as a whole is a problem, because she did not make a dedicated backup when 17.7 ran, so I was unable to fully restore her phone settings with 17.7.

[Edited by Moderator]

I bought brand new iPhone 16 pro on 26 October. After buying the phone I updated the phone to 18.1. But now I’m facing very big issue that my phones battery is draining very fast. Also, it is getting heated while charging and taking the pictures. Where I’m just using the WhatsApp. What is the solution I can get ?

I came from ios17.3.1 with no issues on my iphone 14pro. I bought an apple watch ultra 2 and was forced to update to ios18.1 to get it to work. Now after the update my iphone battery dies in less than a day without doing much on it. It's a shame that apple wants to force you to upgrade to a new device like this. I want the option to downgrade. If this isn't fixed I will be making the switch to android

Hello~Click on for more information…

If the battery in your iPhone drains too quickly - Apple Support

~Katana-San~

Before update to iOS 18, iPhone 15 Pro used to last for a day and more though I use it to run some app test and stuff for 5+ hrs and phone handles it really well but Now I need to keep charging for every 2 hrs and when i plug it for charge it stops charging at 80 % every time and it say's "Charing stopped because of overheating"

Haven't seen such bad software update from iOS

Other issue list:

1. When you install new app, System needs a restart.
2. When we install app which needs to Trust certificate, system needs a restart.
3. While using app, Screen goes black and spinner widget appears most of the times.
4. Keyboard freezes.

This update has rendered my ipad useless - cant even get half a day’s work done!

It’s now not much more than a very expensive paperweight.

It looks like it is the photos app that is killing mine. Dropped 60% in the last three hours.

my Iphone 12 pro max started heating and loosing charge very fast after upgrade to iOS18

Is that due to iOS 18 upgrade ?

Please provide solution, is there any way to revert to early version?

Time to switch. Screw your Iphone 16 whatever. I’m not begging you to fix anything, I am the customer and it’s your job to keep me happy. I paid money for this phone

I have the same battery drain problem after the iOS 18.0.1 update in my 15 pro max

I gave it 10 days, and another update (18.0.1). Still same issues: battery draining fast, iPhone becoming hotter without any reason. Need to charge all the time. It's becoming useless.