Level 1

145 points

Battery Drain on iOS 26 and iOS 26.0.1.

Good morning everyone,

I would like to report a VERY SERIOUS problem with the battery and performance.

I have a NEW iPhone 15 with 100% battery capacity and only 22 cycles (which I did myself; when it arrived, it was at 0).

However, after updating to iOS 26 (and even with iOS 26.0.1, the situation remains the same), I continue to have VERY SERIOUS problems with the battery life of my NEW phone.

Today, I was busy all day and did not use my phone from 8 a.m. to 4 p.m., yet it still dropped from 90% to 45% WITHOUT DOING ANYTHING. No apps were open, the “Refresh apps in background” option was not enabled, the screen was set to turn off automatically after 30 seconds, and automatic brightness was enabled. So it's definitely not the phone's fault because it's BRAND NEW with a 100% ORIGINAL battery, nor is it the settings because it was in PERMANENT POWER SAVING mode. So the fault lies solely with iOS. There are no excuses.

I am writing this message to urge Apple to resolve this issue as soon as possible because, from what I have read on X, I am not the only one.

Has anyone else had this problem?

Thank you very much and have a good day.

iPhone 15, iOS 26

Posted on Oct 1, 2025 8:07 AM

Top-ranking reply

janithak47

Level 1

26 points

Posted on Oct 12, 2025 6:03 PM

Had the same issue on my iphone 16 after upgrading to 26.0.1.

i did these things and battery life seems to be normal. Following are the things i did.

update all the apps manually and do a hard reset by pressing volume up, release, volume down, release & finally hold power button until you see the apple logo. This will force your iphone to restart.
turn on reduce motion from setting. This will disable lockscreen 3d image feature. But maybe this helped to reduce my battery draining. (accessibility—> motion)
turn on the prefer cross-fade transitions(accessibility—> motion). This will disable modern transitions and new glass effect.

somehow these things prevented my rapid battery draining issue.

also please note that for first 2-3 days there are some background processes running to indexing after the update. So maybe that will also take a huge battery power for that process better to give 2-3 days and then try these methods. All or one will help you.

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479 replies

Mac Jim ID

Level 9

64,226 points

Dec 15, 2025 4:41 PM in response to bailey324

bailey324 wrote:

Barely use the phone and by early evening I had 20% battery left. A friend is reporting he’s not getting emails!!!!!

Since you posted in a iOS 26.0.1 forum is that the version you are using? You may want to create a new post with your information and include your Battery Health percentage at Settings > Battery > Battery Health > Maximum Capacity, and the screenshot at Settings > Battery that shows the green battery graph along with the top apps consuming the battery at that location.

Not many people are going to be looking to offer support on iOS 26.0.1 anymore and this topic will not likely receive very many eyes on new posts here.

Mac Jim ID

Level 9

64,226 points

Jan 31, 2026 7:15 AM in response to sk8gal

sk8gal wrote:

We have all been through the endless cycles of questions and suggestions without finding a solution. A better survey would be to find out which iPhone models are experiencing poor battery performance.

That is exactly the point of the questions in the post you replied to. Not only is the iPhone model important and one of the questions asked, but also the Battery Health, Cycle Count, and other info to identify the commonality. Without that additional information from that user there is never going to be a way to find that unique circumstance. There are 2.5 billion active Apple devices and they all are not experiencing a problem with the battery, so for those that are there is something else going on other than iOS 26.

Feb 4, 2026 11:53 AM in response to FNManc

FNManc wrote:

My iPhone is older (13), but the battery response has been shocking since the upgrade which happened over a week ago. Today it has also stopped charging via the port at the base of the phone.

Go to Settings>Battery>Battery Health>Maximum Capacity. What does it say? If it's 80% or less, you need a new battery.

Jeff Donald

Level 8

45,978 points

Oct 3, 2025 6:21 AM in response to Jeff Donald

Do you have any cards in your Wallet app?

jlanier

Level 1

36 points

Oct 3, 2025 11:29 PM in response to LD150

The cause is clear. iOS 26 is 100% a battery drain. I’ve been on ios26 for two weeks maybe, the day I upgraded I noticed the how bad the batter was on my 15pro.

Bravo05

Level 1

8 points

Oct 5, 2025 8:40 PM in response to andrea_filice

I am having the same issue and all my apps have been updated. It’s definitely the IOS26. If there’s a way where I can get back the old one I would. Because my battery health has really been terrible.

Dogcow-Moof

Level 8

36,851 points

Oct 29, 2025 6:44 AM in response to Gitesh_Dhake

You can diagnose it using the steps described several times in this thread.

Nov 12, 2025 4:59 AM in response to andrea_filice

Wait another day. Mine was the same way but now It's running perfectly. I even bit the bullet and downloaded macOS 26.1 on my Mac. Everything is back to normal. Apple was right.

Dogcow-Moof

Level 8

36,851 points

Nov 12, 2025 3:31 PM in response to OMGbobby

If you're still within your return period, you're more than welcome to do that.

Dogcow-Moof

Level 8

36,851 points

Nov 14, 2025 9:30 AM in response to guru125

You are talking to other Apple users here, not Apple.

Please create a new thread asking how to resolve your issue.

L_O_R_A

Level 1

26 points

Nov 15, 2025 4:42 AM in response to Mac Jim ID

I’m ditching social media Apps on my new iPhone 17 that I got last week. I am accessing everything through a secured browser so far so good with that issue on Meta

Nov 29, 2025 2:30 PM in response to Mac Jim ID

I replied but it never showed up. Here’s a typical days usage. The FaceTime call was 1 hour and 2 minutes. And 4 minutes to take 2 photos used 4%!

Alancito

Level 7

30,138 points

Feb 3, 2026 3:42 AM in response to syedfayyaz

syedfayyaz wrote: "my brand new i phone 15..."

syedfayyaz ~ What version of iOS is it running?...

Settings > General > About > iOS Version

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andrea_filice Author

Level 1

145 points

Oct 30, 2025 7:33 PM in response to Mac Jim ID

Yes, I emphasised that it was new because I bought it on 1 September from the website.
I updated it this Monday, but even with iOS 26, it continued to have this problem, even after two weeks.

[Edited by Moderator]

Pampaec

Level 1

14 points

Oct 3, 2025 2:22 AM in response to andrea_filice

I have the same issue. I bought an iPhone 16 pro a week ago and my battery is worse than the iPhone 12 I had before this with 80% capacity. I hope apple fix this as soon as possible because it is annoying.

[Edited by Moderator]

Battery Drain on iOS 26 and iOS 26.0.1.