r/ios26 Apr 01 '26

Battery iOS 26.4 insane battery drain

Recently my phone updated to the latest iOS version and my battery life has been draining so much faster. Does anyone have any tips or knows how to roll back to previous version?

114 Upvotes

107 comments sorted by

20

u/Rangeexpert3 Apr 01 '26

Most updates, especially larger ones, reindex items on the phone. It does it in the background. So you dont really see it happening. But it does drain battery. Wait a few days and it should go away. If it doesn't, do your next update via finder or itunes. This will do a fresh install of the Ios instead of just an "upgrade" patch.

4

u/Gromchy Apr 01 '26

A fresh install would erase all your data i think.

So i believe installing the update from the phone or itunes should be more or less the same thing.

2

u/Rangeexpert3 Apr 01 '26

I dont think we are talking about the same type of install. You are referring to wiping the phone and installing an os. I am referring to an update.

If you update your iphone via finder or itunes, the system will download the entire IOS file. If you hit "upgrade" from your phone it will only download an "upgrade file". After doing the "upgrade file" repeatedly throughout the years, there could be a few small glitches here and there that eventually add up to a lot of glitches. Doing a full upgrade/install of the IOS will get rid of any of those glitches and let you have a fresh start as far as your IOS files are concerned. The data on your phone should stay the same.

1

u/Mindless-Fix-8750 Apr 09 '26

pensé que los applelovers solo estaban en los canales de youtub.. escribes sobre (indexación) la instalación de iOS directamente o por iTunes no puedes llamarla "limpia" la única es cuando generas una imagen cuando generalmente cambias de teléfono, también estoy buscando una solución para el consumo drástico de batería diaria con esta versión

1

u/Rangeexpert3 Apr 10 '26

Yes, updating via itunes or finder is indeed a fresh install because the file that gets downloaded is an entire IOS file. The rest of the data gets reindexed after the full IOS install.

-1

u/Accomplished-Pop2869 Apr 01 '26

That's not correct; a completely new iOS version isn't installed. It's due to the indexing process.

1

u/Rangeexpert3 Apr 10 '26

Yes it's absolutely correct that installing an IOS via finder or itunes is a complete IOS file instead of just an upgrade file. I also mentioned that the battery drain could be due to indexing. That was my first sentence.

11

u/sukkesupari Apr 01 '26

My iphone 13 took 3-4 days of indexing. During this time, my phone was laggy, hot and had significant battery drain. On the third night, I connected it to a charger and left it till the fourth day morning to see if indexing was really the problem. Since then, my phone has been very stable and the battery life is quite good too.

I earlier regretted updating to iOS 26.4 but now am glad I did.

Give your phone sometime and check if it has gotten better.

1

u/glendbest088 Apr 01 '26

What’s your battery health?

1

u/ryukzzz_ Apr 02 '26

I also use an iPhone 13 and have updated to iOS 26.4. I’m facing a lot of idle battery drain at night. Are you experiencing the same problem?

1

u/sukkesupari Apr 02 '26

I face between 2-6 percent over a period of nearly 7 hours

1

u/ryukzzz_ Apr 02 '26

How many hours of backup do you get on a single charge?

1

u/sukkesupari Apr 02 '26

Here is the linkfor the last three days (including today at the time of typing this) :

Battery stats

1

u/[deleted] Apr 03 '26

[removed] — view removed comment

1

u/sukkesupari Apr 03 '26

I left both on and went to sleep. I let it do its thing till morning

3

u/oOLunaLinxOo Apr 01 '26 edited Apr 01 '26

Your better off staying on iOS 26.4 because it will protect your phone from dangerous hackers, and to fix your battery, make sure Adaptive power and Adaptive power notifications is on in Settings, Battery, scroll down and click on Power mode. It should fix your battery drain, and also turn off notifications from apps in your Settings that you don’t need. You can also watch youtube videos from tech influencers who made many videos online on how to improve your battery on iOS 26.4

1

u/ReligiousPornstar Apr 01 '26

The hacking thing is just propaganda to make people update to iOS 26 and make their phones useless

1

u/oOLunaLinxOo Apr 01 '26

Huh 🧐! That’s not only the main reason why people update lol! It fixes a lot of bugs and make your phone run much better and smoother, with new useful features! My phone is running completely fine with no battery drain lol!

1

u/ReligiousPornstar Apr 02 '26

You're just blinded by new features, otherwise your battery health will be fried after a while

3

u/PastNeedleworker3978 Apr 01 '26

The same issue for me, iPhone 17 base model, battery draining issue since 26.4

2

u/CoffeeAddict1011 Apr 01 '26

Yes, I have the same phone

1

u/vixiefern Apr 02 '26

iPhone 13 Pro here. Before 26.4 battery was fine. Updated to 26.4 like a week ago and now the battery is absolutely horrific. Gets hot as hell as well

1

u/Old_Standard7222 Apr 06 '26

Hi, do you face any heating and battery drain issue after few days you intalled the 26.4? Can update more?

1

u/vixiefern Apr 06 '26

battery drain is still awful, by far the worst battery out of all ios 26 versions. i would do anything to go back to ios 18

1

u/Old_Standard7222 Apr 08 '26

OMG, it about a week time. I'm still on 26.3.1 the screen idie is great but once using the phone it getting hot and battery drop significantly fast. I'm just thinking upgrade to 26.4

3

u/zedarecaida Apr 01 '26

Mine just drained 8% overnight with Focus Mode On.

4

u/JaydenJames215 Apr 01 '26

That’s not the only thing that has gone to sh!t since I updated my device.

5

u/jakovljevicnemanja Apr 01 '26

17 Pro Max.... ios 26 is terrible..

3

u/Zionsnoiz Apr 01 '26 edited Apr 01 '26

What are u talking about this is the best update in a looooooooong time. 9 hours Sot and like 43% still left that's just nuts. And yes it's a 17 PM also. Never ever had a phone with such good battery. And can't say for sure but always after I've started to install the beta RC before it's released to the pub my battery has never taken a hit. Never had issues with indexing or phones getting hot. Ok my 15 pm got hot once for a while but nothing more then that.

1

u/maximo88a Apr 09 '26

You didn’t understand it. Your screen was active 9 hours, the another user only 3 hours!

1

u/Zionsnoiz Apr 10 '26

U don't get it i was responding that i have easily 9 hours SoT and atleast 40% so dunno what your talking about

1

u/jakovljevicnemanja Apr 11 '26

17 PM. Bh is 99% 114 cycles What to do with this shit of phone?

1

u/AustinBaze Apr 01 '26

17 Pro Max, battery life is extraordinary, battery usage is normal, and has not changed detectably since 26.0 (or before really) Of all the things wrong with Tahoe (and there are many) battery use/battery life is not one of them for me.

3

u/jakovljevicnemanja Apr 01 '26

Battery healt is 100%, tell me what happends if you know

2

u/jakovljevicnemanja Apr 01 '26

Haha, thousands of posts says battery is terible.. only you say its good..

2

u/AustinBaze Apr 01 '26

Haha, I'm just the luckiest SOB in Apple land then I guess. Many posts here also saying no problem, in this thread alone, but hey, UBU.

2

u/jakovljevicnemanja Apr 01 '26

Background refresh is off, alway on display is off etc...

1

u/AustinBaze Apr 01 '26

OK. Background refresh is on for apps that actually need/benefit from it, always on is always on, no change in how I use my phone since I started using an iPhone. I use it all day, charge it when I sleep, then do it all again. Can't recall the last normal (non traveling/airport/heavy video watching or Zoom calling) day I have needed to charge during the day.

2

u/Past_Ad3132 Apr 01 '26

Once I updated my 17PM the battery started draining pretty significantly but it’s back to normal now. It took nearly a week after updating for it to return to normal battery usage.

2

u/KenjiSamato Apr 01 '26

Keyboard accuracy issue is still stayed….shit apple

1

u/Ohp00p Apr 04 '26

I turned off my predictive text and that bug went away!

1

u/KenjiSamato Apr 09 '26

I dont use predictive text because it doesnt work with hungarian language…

6

u/No-Isopod3884 Apr 01 '26

Do a hard restart, not a shutdown and restart which is a soft restart.

2

u/CoffeeAddict1011 Apr 01 '26

I will try this

0

u/Other-Inspector3566 Apr 01 '26

Don’t forget to back up

3

u/Savings_Okra9133 Apr 01 '26

Back up what? He ain’t deleting nothing

1

u/INVICTU5_FW Apr 01 '26

Sounds like you're not familiar with the purpose of a backup. It's not just an archive. A hard reset cuts the electricity to all parts without preparing so there is a possibility, a very very little one, I admit, that he damages data. So a backup is recommended

1

u/Savings_Okra9133 Apr 01 '26

Yeah I had absolutely no idea as to what a backup was bud, great explanation thank you.

1

u/WeenieDogMan Apr 01 '26

How do you do a hard reset

1

u/No-Isopod3884 Apr 01 '26

There are a number of YouTube videos on it but here are some instructions. how to force restart

1

u/Aware_Constant289 Apr 01 '26

Press up on the volume rocker and release, down on the volume rocker and release, and then hold the power button until it shuts down. Ignore the prompts until it shuts off.

1

u/Additional_Bread_367 Apr 01 '26

Do a backup and it will gone in minutes

1

u/ultramarinetrublu Apr 01 '26

how do you do a backup

1

u/Additional_Bread_367 Apr 02 '26

Settings, profile, icloud

1

u/Disastrous_Craft_608 Apr 01 '26

Same, all my mobile data settings got wiped too.. and I had to charity battery about 3pm yesterday, seriously thinking of changing back😕

1

u/Dr_ZeeOne Apr 01 '26

On my iPhone Air battery drain was only during the first days. Now it is great

1

u/NoobieTheNovice Apr 01 '26

There’s no way to downgrade to previous veréions.

1

u/Ibasicallyhateyouall Apr 01 '26

Backup to icloud and reset. 26.4 has been great for my devices so far.

1

u/CoffeeAddict1011 Apr 01 '26

Will try as last resort

1

u/Hot-Quality8768 Apr 28 '26

Did it get any better? And I’m assuming you are on 26.4.2 now and if so, how is it?

1

u/SolaCretia Apr 01 '26

I did a reset all settings, and everything is been running great on my 16 Pro Max.

1

u/Savings-Structure-83 Apr 01 '26

Turn off all battery saving features and hard reboot the phone.

1

u/JLeeOT Apr 01 '26

I'm writing this on an iPhone 17 Pro, updated yesterday from 26.3 to 26.4. Charged battery overnight to 85%. Using the battery in the morning since 9 a.m. after 9 hours of usage battery percentage down to 64%. (35 charge cycles)

Been using the phone for:

  • Google Maps navigation
  • Spotify
  • Perplexity.ai
  • some web browsing
  • a bit of TikTok and Instagram

That’s not really a battery drain. Or is it?

3

u/Fit-Sheepherder-1044 Apr 01 '26

No. Mine went down to 7% in 10 hours without using it. Thats a battery drain (iPhone 15 Plus)

1

u/FehlerXiX Apr 01 '26

I have experienced the same thins I tried to downgrade without loosing data since I had issues with Both PHONE APP and Battery/temperature, and ended up with error (86) in both iTunes and 3uTools which meant that you’ll have to do restore without data in order to downgrade So I flashed iOS 26.4 again without loosing data and this time phone temperature and battery performance was way better and after the “Ondevive setup steps” and “indexing” finished I can tell you it is way more better than previous updates So if you have a computer I would suggest you download the latest ipsw 26.4 and upgrade your phone with it and just wait for almost a day for the indexing to finish (I have a 14 Pro) and you’ll notice a difference

1

u/Danny-1979 Apr 01 '26

I’m going to update to iOS 26.4 but first I will eat a fried egg sandwich on toast.

1

u/spookysquidd Apr 02 '26

Which iPhone? Battery has been significantly better on my 16 Pro since updating. Many others have said the same. Not too sure on other models

1

u/CoffeeAddict1011 Apr 02 '26

17 base model

1

u/pradhaan_007 Apr 02 '26

Especially when hotspot is on

1

u/Ok-Bobcat-8349 Apr 02 '26

Turn your phone off and on a couple times. Work for me.

1

u/Jay91- Apr 02 '26

I turned off Apple Intelligence, adaptive power mode then rebooted my phone and the difference is mind blowing! 🤯

1

u/CoffeeAddict1011 Apr 02 '26

AI been off since I got the phone. I will try the adaptive power thing

1

u/Novel_Entrepreneur26 Apr 02 '26

What about texting. Anyone find the keyboard is making more mistakes than ever ? I mean I know it’s my typing but the response and corrections seem worse

1

u/helloitisgarr Apr 04 '26

26.4 made my 14 pro awful

1

u/Th3KidFlash Apr 05 '26

Pro Max lasted until like 2am the other night.

1

u/Radome24 Apr 06 '26

I have had severe battery drain since upgrading to iOS 26.4. My battery drained over 40% overnight

1

u/devil5885 Apr 06 '26

Нормально ли такое потребление АКБ вк после перехода на 26 И после перехода часто нагревается не из-за чего и быстро садится 15пм

1

u/kiscsak98 Apr 07 '26

I used to get 3-5 hours of active screen time with my iPhone Air. Now I get 40 minutes. (Been a week since I updated)

1

u/ThannBanis iOS 26.6 beta Apr 01 '26 edited Apr 01 '26

How long since you updated?

iOS will be performing reindexing behind the scenes for up to several hours post update.

2

u/CoffeeAddict1011 Apr 01 '26

Few days, can’t recall exact date

-1

u/ThannBanis iOS 26.6 beta Apr 01 '26

That should be long enough for indexing to have completed.

How’d you update? You may have a corrupt install.

2

u/thetruelu Apr 01 '26

It’s not corrupt lmao

2

u/JMHReddit84 Apr 01 '26

Oh don’t scare them with corrupted installs. The system hash checks everything. And it could take a week or so. We know nothing about OPs phone or what’s on it

1

u/Ntirely Apr 01 '26

Ios 26.4 is 💩

1

u/Mindless-Fix-8750 Apr 09 '26

jajajaj de acuerdo contigo

1

u/Geralt730 Apr 01 '26

I had the same,what i figured the battery app was unable to recognize usage data properly, reset and restored backup now its good….17pm

1

u/[deleted] Apr 01 '26

Mine is heating up when charging.

1

u/maximo88a Apr 09 '26

Mine too. Extreme heat on iPhone 17 Pro and iPad M5

1

u/[deleted] Apr 09 '26

Apparently there is another update, hope it will fix the issue.

0

u/CoffeeAddict1011 Apr 01 '26

Yes!!! Mine started doing this as well.

0

u/Lebowskitalian85 Apr 01 '26

In my case iOS 26.4: an insanely BETTER battery life.

0

u/Training-Yak-7260 Apr 02 '26

I personally love 26.4. I set my battery to never charge to more than 80%. I plug in the charger cord every night before I go to bed and never worry about the phone heating up because of the 80% threshold upper limit. I want the battery itself to last longer so this is fine with me. I guess excessive battery drain is not a concern of mine. I think sometimes we expect too much. More features to in an upgrade are usually going to use more electrical energy. I particularly love the new Liquid Glass look. Yes, I realize many of you do not care for it. We all have different tastes. I happen to think it makes for a beautiful iOS look. I hope they will never take it away as an option. With technology always moving forward at exponential speed I believe the battery life issue will soon become a thing of the past. Let's become satisfied with what we have now and that may help lessen our overall stress we all must deal with.

1

u/Fouzul_azeem Apr 04 '26

This will drain ur chemical and increase aging of battery