Battery Drain on iOS 26 and iOS 26.0.1.

After updating to macOS 26.1, my MacBook M4’s battery life dropped from around 12 hours to just 4 hours.

Yes I had this issue. I have iPhone 15 and before the update it was at 90% but now it is 83%

same issue with my new iPhone 15

I did everything but still face the battery drain issue.

Followyoheart wrote:

Disclaimer: At your own risk please.

I'm not sure what you consider "risky" about making basic adjustments in settings.

mitt battare har fasnnat på 1 procent den går inte upp

Mine is the same its been several weeks since i updated but i noticed right away that the battery life was being drained to quick. Hope a solution comes quickly.

sk8gal wrote:

I have iOS 26.1 on an iPad A16 and an iPhone 13 mini. The iPad mostly stays at home and doesn't get used all that much. Still has Facebook on it. The battery life is fine. I haven't tested it by taking it out and about. The phone, however, has horrible battery life (85% battery health).

With an 85% Battery Health, I would expect you are going to need a new battery in about 5 months or less. The iPhone mini was discontinued over 2 years ago and released over 4 years ago, so based on the time range, that would be average if you purchased it closer to the 2 year mark and exceptional if you got it shortly after release.

Apple states that the iPhone 14 or earlier is expected to last 500 charge cycles before needing to be replaced when it drops below 80%, while later models are rated at 1000 charge cycles. What we have seen on average and also in line what Apple has disclosed on the expected Battery Life is that iPhone 14 and earlier models drop about 1% Battery Health a month on average when measured over time. The iPhone 13 mini does have a smaller battery than the base model, so there may be some truth to what you were told, but as far as Battery Health is concerned, it still looks like it has exceeded its expectations. It also would make sense the a 15% drop in Battery Health would be more noticeable when a device has a smaller battery to begin with.

With that said, the iOS update does not change your Charge Cycles for any of the expectations on your Battery Health and performance is directly related to the health of your battery. I do think the iOS 26 update uses more of your battery due to the UI effects, but personally for me it has not been a drastic change and I think you are seeing more of the effects of your decreasing Battery Health being compounded with the update where your battery will need to be replaced shortly anyways. Removing the high battery consuming apps will see an improvement, while you are in these last few months, but the battery replacement will be inevitable. That would have been true no matter what iOS version you were using.

Battery stats are not updated immediately and are done on a background process similar to the way Steps are added in the Health app. In both cases the values are updates shortly afterwards when that background process has been completed, not done in real time. That would explain why you see a different value immediately after ending a FaceTime call.

To get a better idea on the rate of drop you are seeing, can you post the green battery graph with the last 24 hour option selected. I agree that a 30% drop seems excessive on a 1 hour call.

This is happening to me also. I tried to find a way to uninstall the new iOS 26.1 because it’s so frustrating. I’ve already forced a restart and checked my settings. But today as an example, I glanced at my phone for 10 minutes this morning. And glanced again for 2 minutes around 1 pm and my phone died at 2 pm. After being charged all night mind you. Before this update my phone battery would die after 13 hrs of CONTINUOUS use. This is ridiculous

What makes you think I haven’t tried? The caution was there because everyone has different requirements. Some may want the mail to arrive as soon as possible because that might be most important for them, some may prefer automation most maybe because they are on road most of the times driving, some may have to keep their devices outside their workplace and hence cannot afford to turn location settings off. So it was just a caution to try out what suits you the best without jeopardising what is important to you. My screen shot of the experiment shows a 14% drop from full charge in 21 hours. Of course phone was idle mostly. But it was important to see how the charge drops without usage. It used to be 15-20% overnight under default settings. But still I am saying maybe my device has got stabilised now (as we all know devices takes time to settle down after certain updates) and there is a room for error in my assumptions. I think we can learn to give some credit to others as well.

Ltrsnmbrs wrote:

Everyone is entirely welcome to develop their own apps that are more battery efficient.

Hello ~ What does that actually mean?

~Katana-San~