How to Fix iPhone 15 Pro Battery Drain After iOS 18?

I experienced the same, then came across this article 7 Proven Steps to fix iPhone 15 Pro Battery Drain Issue, adjusted Siri settings, journaling suggestions, allowed just few apps for background refresh and untoggled all and followed other suggestions which I thought wasn't necessary on my phone and battery performance is now better then before. I must say apple should work on there batteries they are draining too fast as compared to other same budget android phones 

Same here. I have an iPhone 15 pro max. Same issue. Before iOS 18 my battery was stellar. Now I need to charge it like 6pm when I never had that problem on iOS 17.

this needs an urgent fix. A fast fix.

I have the same issue too, i’ve been trying to get a solution for this problem for the past couple of days, but nothing changes. My phone is around 1 month old now (Iphone 15 Pro) and for me, for some reason “Home & lock screen” is draining my battery super fast. I don’t even have “display always on” in the settings. Before iOS 18 it was working totally fine, could go a day without charging, now I have to charge it twice in a day. I hope they fix this, because for this amount of money, this phone shouldn’t drain too much.

Yea same here , battery is draining so fast on iOS 18 , i regret updating my phone, it was stable on 17.6

+ 1, it is the exact same problem that I am facing. I use a 15 Pro MAX and battery has been draining since the ios18 upgrade. Surprisingly the Home & Lock Screen is taking away 10%+ of the battery usage. What is the fix for this?

Subject: Urgent Complaint About Severe Battery Drain After iOS 18 Update

Dear Apple Support Team,

I am writing to express my frustration and disappointment regarding the severe battery drain issue I have experienced on my iPhone 15 Plus after updating to iOS 18. Before the update, my battery usage was consistently between 6-9% per hour, which was perfectly manageable. However, after the update, I am now experiencing an alarming usage of 12-15% per hour, even with similar usage patterns.

This significant drop in battery performance is unacceptable for a premium device, and I am not alone in this. Numerous other customers have reported the same problem, and it is frustrating that Apple seems to be ignoring these complaints. I’ve been a loyal Apple customer for years, but this lack of response to such a widespread issue is pushing me, and many others, to reconsider our loyalty.

If this issue is not addressed promptly with a solution or update, I will be forced to switch to another brand, and I believe many other customers will follow suit. Apple’s reputation for quality and reliability is at stake here, and ignoring customer concerns will undoubtedly lead to a loss of trust.

Please prioritize this issue and provide a solution as soon as possible.

Sincerely,

Ezio

I have only used my phone for about 2 hours this morning playing music via Bluetooth and making a few phone calls totaling about 1 hour and have lost 30%. I hope there is an update soon to fix this. Battery health is still 99% on my year old phone. 175 charge cycles.

Same here on my iPhone 15 Pro Max. I know that OS upgrades can cause battery drain and heat at first, but my wife's iPhone 14 Pro doesn't have this issue, and she upgraded at the exact same time I did late on the 16th. And we run the same set of apps. My friends on other phone models don't have this issue. It's just me and a few on iPhone 15 Pros (standard and Max).

I can't even hold the thing it gets so hot at times. I've shut down all but the most essential background apps, which I shouldn't have to do since NOTHING ELSE CHANGED other than the OS upgrade. But I tried it anyway.

I've "booted" it so many times hoping that would reset something. I can't get 1/3 of a workday with my normal work (just reading email and work chat messages). On iOS 17 I could go from the time I woke up until the time I go to bed, let's say around 15-16 hours, and I'd still have around 50% battery. Now I can't get through just the morning before hitting that.

Plus, it is just too hot to hold. In case or out of case. Something is amiss here. I also noted that Battery is reporting that Home Screen is eating up like 90% of the battery. Everything else (dozens of apps I use in a day) are the other 10%. I've not noticed that happening before.

Very frustrating.

I don’t have the weather widget on my Lock Screen and my battery is draining like there is no tomorrow .

guys, I just did a downgrade on ios17 I don’t have the ios18 features now but my battery is brilliant, and I can normally use my phone…I can’t believe apple does such a thing on a new phone I mean iPhone 15 Pro came last year on the market how is that considered as old….downgrade to ios17 that is the best you can do…or if you didn’t update don’t to that!

ios17 is really stable and battery and performance are no problem

!!! Do the downgrade fast, while it’s still signed, soon they will remove it !!!

Download iOS 17 File on ipsw.me and restore it on iTunes

IMPORTANT

sync all your data to iCloud, Apps and Home Screen etc. needs to be screenshoted because it’ll be deleted and you can only restore things from iCloud, Backup Restore won’t work only the Data from iCloud will be restored that does NOT include apps and lock/Home Screen wallpapers

I never had the weather widget on my i15 Pro since day one with iOS17, but yet still facing this Battery Draining issue after updating to iOS18.

Home & Lock Screen is the culprit.

Same issue here with a 1 month old iPhone 15 Pro. Home & Lockscreen is draining the battery really fast.

I did not use my phone today till now and the battery is down from 80% to 65% within 12 hours. Thats way too much, with iOS 17 it did loose only like 5% for that period of time.

I will try and remove the weather widget from my home screen. If that doesnt help i will make a backup wit iTunes and restore it from there.

It's not that this time. I've experienced that in other upgrades and Apple keeps saying this but remember. We are FIVE DAYS in. My wife upgraded her 14 Pro within seconds of me and she doesn't have the issue. My son and daughter and their spouses... no issues. The only people I know with this issue are on 15 Pro series. Out of a dozen or so others I know, only two that have 15 Pros have this issue. I wish it were that simple.

Two hours with Apple support at different levels and they are hearing this from other 15 Pro series user. Even they said it shouldn't be the "normal indexing process" after these many days. Their only suggestion, wipe the device and do not restore from iCloud backup. Great. A week of resetting my phone up for work and personal use if I do that. I'm going to see if a patch fixes it and just not use it much, hoping the battery doesn't explode from the constant heat.

same issue with iPhone 15 as well, the phone gets heated up too when the battery is draining which is something I have never experienced (increase of temperature in iPhone 15) in the past.

After an iOS update, it's common to experience an increased battery drain as certain tasks related to the update continue in the background including indexing, you should only experience this increased battery drain for a few days before it goes back to normal.

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