iPhone battery draining after iOS 18 Update

IP 15 Pro Max here,

Before the iOS 18 update my battery’s health was at 94%, now it dropped to 90% within a few days. Not to mention the fact that even before I was extremely worried that I lost that 6% of the battery’s since last year when I got the phone, it kept draining the battery’s health way quicker than I had anticipated, now it is just horrible. I’ve updated to iOs 18.0 on the first day of it and since then I’ve been losing approximately 0,75-0,8% of my battery’s life a day. I am really concerned about the whole thing, this being my first Apple device too. I’ve tried everything such as: closing apps refreshing in the background, freeing up some storage, low power mode, constant and universal charging. However nothing seems to work, I’ve seen others having the same issue and I’m asking myself what is going to happen to the battery’s health after 18.1 . Will it go back up? Or we just have to replace our batteries or even our phones? I saw someone saying that we’re literally counter-clock through this whole thing. Forgot to mention that I’ve kept my charging limit to 80% since I got the phone. Not even to bring up the fact that a full charge doesn’t last me 12 hours on moderate usage.

What should we do???

Updated to iOS 18. Worst decision ever. My 13 Pro Max doesn’t even last 8 hours now. Even without using the phone the battery goes down 30%. This never happened on different software updates. I’d unplug my phone in the morning and by 3PM it’s on 20%. I don’t want to buy a new phone either as this one works perfectly! Outrageous.

here the same, my phone keeps the charge and i have the same performance in that part but my battery health is decreasing like ****, i had 100 percent of battery health and now after three days it is 96 percent. its like every day im losing one percent of my battery health.

Same here for iPhone 13 as well for iPad 7. Both devices used to have perfect battery life throughout the day. Since the iOS 18 update the battery life has become terrible. I can't even get through half of the day with my iPhone. The batteries are draining by the minute.

I was able to fix mine by hard restarting my phone. Press volume up, volume down, then hold the power button. It should show the power off slider but just keep holding it until you see an Apple logo and it will reboot.

I think the update to conserving battery health made it freak out. I lost 1% overnight but I don’t have any widgets on my lock screen and always on display is off.

After updating to IOS 18 my battery is draining much faster than before?? Is this due to using colors on the Calendar? And other new and not necessarily wanted features? I was very happy before the new, ‘Bells&Whistles’! Is there a fix on the way?

In my case, from a battery that held 1.5 days now holds 0.5 days. Overnight the battery can drop 20% when the phone is idle. I updated it for the release of iOS 18 so waiting a few days for iOS to finish its post-installation processes did nothing. In addition, during these 10 days, the condition of my battery dropped by 3%. A fresh install didn't help either. This is not normall.

After installing iOS 18, my iPhone 11 battery started draining very quickly. Overnight, it drops from 100 to 80 percent, and throughout the day, even with minimal phone use, the battery drains significantly. That's only half the problem. Navigation in maps started behaving strangely. For example, the map shows I’m moving in the right direction, but the pointer indicates that I'm facing the opposite way, as if I’m walking backwards. It’s unclear who tests these updates before release, but this one is definitely a failure. Or is the company pushing us to buy a new phone this way?

Mine doesn't just die faster, it takes F O R E V E R to charge. It's been on the mag charger since 6:00 this morning - it's now 2:13 pm and I'm only at 43% - I will throw this phone in the trash and switch to Samsung - I'm not doing this garbage. The watch, the phone, the airpods - in the trash - this feels like the same garbage they got in trouble for before - screwing up phones to force you into buying the new model. I'm not doing it anymore.

Dear @apple please help us fix this thing. My iPhone 15 pro max drains so fast after upgrading to iOS18 and this is so frustrating. Never carried a battery power bank before upgrading to iOS18. Now gotta carry whereever I go. Thank you for acknowledging this Cheers.

[Edited by Moderator]

Since I did the IOS 18 my phone, IPad and watch do not even hold a charge for a day. My watch use to get 2 days before charge, now it’s half a day if that. My IPad only gets 2 hours before it’s from 100 to 10% I use to get at least a day on it and my phone forget about it, it’s now always on the charger. Every single time there is an IOS update it always messes with my phone. I’m seriously thinking of going back to Android. I never had these issues with them. And there are way to many IOS updates in a year.

Same tbh. I got new iphone 14 pro, with battery health on 100%

updated on ios 18 in 3 days. And the battery drain is terrible.

charging a brand new phone 2x a day is absolutely ridiculous. My old iphone 13 battery with health on 90% and ios 17 drains less.

i dont knownif i should wait for few days and just straight up replace the battery or return the phone.

I now have a very expensive paperweight! Battery has drained by 30% in the last 2hrs and I’ve only used it for 15mins in that time! I’ve tried all the tips and tricks to speed it up after an update but none have worked! Thanks Apple you are the best!

Since updating to IOS 18 my iphone 14 drains so fast , I contacted Apple and they did a diagnostic and could see it was draining even when not using . They need to send out a IOS update to help everyone as this is ridiculous, my phone is dead by 9pm

Shut it 3rd world tech support. You people keep repeating this same song and dance instead of hearing other people's issues. IOS has been a DEI induced garbage fest for a year now and something in the code keeps pegging the SoC like the woke devs peg each other. This is annoying and not befitting a phone that costs over thousand dollars.