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16PM here, mine use 50% of the battery every day with 6-7 hours of screen activity.
 
Doesn't this happen with each new iOS, each and every year? Many of us, with new phones or not, experience excessive battery drain upon installation of iOS(x+1), and excessive battery drain is only exceeded by excessive griping about this predictable phenomenon that is always rectified by an iOS update.
 


Some iPhone 16 and iPhone 16 Pro users have been experiencing excessive and unexplainable battery drain, according to complaints on Reddit, the Apple Support Communities, and the MacRumors forums. While many of the reports are from iPhone 16 users, older iPhones running iOS 18 may also be experiencing battery life issues.

iphone-16-pro-max.jpg

There is a long-running iOS 18 battery life complaint thread on MacRumors that was started while the update was still in beta, but there have been a fresh wave of complaints following iOS 18's launch and the debut of the iPhone 16 models.

Affected iPhone 16 owners have seen significant battery drain even when the iPhone is not in use. From MacRumors reader T1aaj:

From JulianL:

In some cases, much of the battery drain happens in standby mode when the iPhone isn't in use, suggesting a background activity could be causing problems for some users. Using the phone seems to cut the battery drain in these instances.

From huanbrother:

From kirbysmartdawg:

There are similar complaints about the iPhone 16 models and older iPhones running iOS 18 on Reddit, and while we always see reports of battery life issues when a new version of iOS comes out, there seems to be a definite uptick in the number of people having problems.

From Reddit user Ok-Interest-6561:

On Reddit, one user did an experiment with an iPhone 16 Pro and an iPhone 14 Pro, and claimed to have used both in the same way. The iPhone 16 Pro dropped to 58 percent battery life within 36 hours, while the iPhone 14 Pro was at 85 percent.

Battery drainage issues are difficult to diagnose because iPhone usage habits vary so much from person to person and from day to day. Impacted users have tried turning off ProMotion, disabling the Always On display, turning off background app refresh, removing widgets, turning off cellular, and entirely resetting their iPhones. Some people have seen improvement with some of these methods, but not all have, and the battery life issues persist for many despite troubleshooting.

Some users reported improvement with iOS 18.0.1 and the iOS 18.1 beta, but software updates have not worked for everyone. It is not clear exactly what's going on to impact battery, but it's sounding like there is an underlying bug that Apple will need to fix in a future iOS 18 update.

Article Link: iPhone 16 Users Complain About Excessive iOS 18 Battery Drain
Don’t worry, the next super-duper iPhone 17 will fix everything wrong with iPhone 16. 😆
 
Nobody cares, but I can back this up profoundly… Haven’t experienced this frakin iPhone 7… And I’m talking about the isolated case of the first version of a big update like iOS18 - massive drains - I don’t know what else to turn off any anymore
 
My battery is trash. It is so random on how it sometimes is decent and other times just drains like crazy after it heats up. Its honestly been a super rocky start for this phone for me. The camera button is useless and the battery life has been worse than the 15 Pro Max at least for me.
 
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This year I upgraded to 16 Pro, not the 16 Pro Max. I decided not to wait several months until the Pro Max becomes "in-stock" at my local carrier store. There was noticeable battery drain when everything was loading on my new 16 Pro. After that battery seems to be alright.

It is great how easy it is to transfer all the stuff from the previous Pro Max onto the new Pro using iCloud.
 
Glad I didn't downgrade to a 16 Pro,..running 18 PB on a 15 Pro and battery longevity has been brilliant!
 


Some iPhone 16 and iPhone 16 Pro users have been experiencing excessive and unexplainable battery drain, according to complaints on Reddit, the Apple Support Communities, and the MacRumors forums. While many of the reports are from iPhone 16 users, older iPhones running iOS 18 may also be experiencing battery life issues.

iphone-16-pro-max.jpg

There is a long-running iOS 18 battery life complaint thread on MacRumors that was started while the update was still in beta, but there have been a fresh wave of complaints following iOS 18's launch and the debut of the iPhone 16 models.

Affected iPhone 16 owners have seen significant battery drain even when the iPhone is not in use. From MacRumors reader T1aaj:

From JulianL:

In some cases, much of the battery drain happens in standby mode when the iPhone isn't in use, suggesting a background activity could be causing problems for some users. Using the phone seems to cut the battery drain in these instances.

From huanbrother:

From kirbysmartdawg:

There are similar complaints about the iPhone 16 models and older iPhones running iOS 18 on Reddit, and while we always see reports of battery life issues when a new version of iOS comes out, there seems to be a definite uptick in the number of people having problems.

From Reddit user Ok-Interest-6561:

On Reddit, one user did an experiment with an iPhone 16 Pro and an iPhone 14 Pro, and claimed to have used both in the same way. The iPhone 16 Pro dropped to 58 percent battery life within 36 hours, while the iPhone 14 Pro was at 85 percent.

Battery drainage issues are difficult to diagnose because iPhone usage habits vary so much from person to person and from day to day. Impacted users have tried turning off ProMotion, disabling the Always On display, turning off background app refresh, removing widgets, turning off cellular, and entirely resetting their iPhones. Some people have seen improvement with some of these methods, but not all have, and the battery life issues persist for many despite troubleshooting.

Some users reported improvement with iOS 18.0.1 and the iOS 18.1 beta, but software updates have not worked for everyone. It is not clear exactly what's going on to impact battery, but it's sounding like there is an underlying bug that Apple will need to fix in a future iOS 18 update.

Article Link: iPhone 16 Users Complain About Excessive iOS 18 Battery Drain
No issue with my 16 Pro max got it Sept 20th . I charge it to 80% and use it all day and drain it down to under 10 sometimes. I am finding no excessive drain at all even from 18 to 18.01 . Sucks that others are having this problem but everyone I know that has a new one , isn't having any issues . Keep in mind , I charged my phone last night to 80% took it off charger , when I woke up at 830 am and went to bed at 1230am it still had 75% so 5 percent drain in 8 hrs in idle mode is normal I guess. Hopefully apple address these issues soon.
 
Those who claims that they have no issue could be apple spys. The battery drain is terrible.

I had my 16 pro max charged to maximum using apple charger and usb cable. iPhone was left unplugged since 7 hours ago, unused. It was kept in air fconditioned room at 20degc. I woke up and it’s 97%. 3% drained for no reason?

I’m returning it anyways. Could be defective unit. Could be desay battery.
 
Every year. Same inevitable complaints. I find that disabling always on display and closing out all running apps allows my 16PM to maintain its battery life over nite. Otherwise the battery drains about 20%. Even though the phone is literally not in use.
 
No problems for me with my 16 Pro, and haven't seen it below 50% in the 12 days or so I've owned it, including a week on vacation. I keep AOD off, and background refresh off for the vast majority of apps, and I'm a pretty lite user. 18.0.1.

My watch, however, on the newest watchOS?...awful. It has gotten quite cold here lately, and I spend a lot of time outside, so maybe that's it? I put a sweatband over it today during my trail run, and it seemed to do a bit better..maybe.
 
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Every year. Same inevitable complaints. I find that disabling always on display and closing out all running apps allows my 16PM to maintain its battery life over nite. Otherwise the battery drains about 20%. Even though the phone is literally not in use.
I did every possible and imaginable actions. Aod,promotion, Siri, background refresh, min brightness, airplane mode, etc and etc. 3 % drained overnight……. :(
 
I am definitely waiting for the 2nm Apple silicon models. iPhone 18.

Before I switch back to iPhone from Samsung S24.

getting awesome battery life after a few updates on my S24
 
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My experience has been the reverse. I went from 13PM, with battery I could stretch to two days fairly easy, to a hot 15P I had to charge midday daily. I switched to a 16+ and I end the day with at least 35%, usually >50%, without midday charging.
 
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Running 18.1 on my iPhone 16 Pro and battery life is as equally disappointing as it was on my iPhone 15 Pro.
 
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