iPhone 15 Pro Battery Drain Issue

Turning off “Always On Display” made a noticeable difference with my 15 pro battery drain issues.

Settings > Display & Brightness > Always On Display

I also experienced the same battery issues with my iPhone 15 Pro at first. I spoke to Apple Support and they said everything was fine with the battery after running a diagnostics.

We changed some things to optimize the battery life such as turning off Background App Refresh. After observing it for a week the battery still keeps draining fast so I went ahead to return the phone.

I was given another Iphone15 pro and I just restored my backup with the same settings from the previous phone. After more than 2 weeks of usage I would say the battery life is back to normal now. It lasts 15-23hours based on usage so I can’t complain anymore.

It could be worth doing the same thing I did if you’re still having battery issues and you bought your phone directly from Apple.

I hope this helps.

I have an iPhone 15 pro and have been experiencing the discussed battery drain issue even with all settings optimized per suggestions here. I had the same issue on a iPhone 15 that I returned within the 14 day window as the drain was severe even with changed settings. I noticed iOS 17.3 was available today, so I went ahead and installed the update. I have very limited data now but charged to 99% 35 min ago and my phone is still at 99%. This in itself is drammatically better than what I was experiencing before, a drain of at least 4-5% minimum per hour, even with everything optimized as this Discussion tread has been talking about. So I have some hope. I’ll come back and report more data once available.

I also bought iPhone 15pro last week, suddenly I felt that the battery started draining rapidly and my phone could not last at least a day.

Apple should take an appropriate action ASAP.

Actually, it's quite common to see new phone underperforming in terms of battery life.

This is because of the phone is still learning your usage to optimize the battery which usually take quite a while. I bet you will see a significant improvement in power longevity after a week or two.

Moreover, I'd like to share some of my personal settings that I use to make my Iphone last a day:

1, I often use low screen brightness (around 30% to 45% of brightness) to preserve more power.

2, I always disable on-screen display since I just don't find it useful (Old habit of using Iphone I guess)

3, Only apps those required to use during my job will be excluded, the rest will be suspended from running in the background

4, Setting a short auto-lock duration is also very crucial since there is no point letting the screen on when you are not using your phone. My personal auto-lock duration is 30s

5, Last but not least, get a smart plug, set the smart plug duration to match the time that your phone needs to charge from 20% to 80%. This sounds overkill but probably the most effective solution based on my personal experience. I can feel that my current Iphone 14 battery last the longest out of all the Iphones that I've been used. This is also the first phone that I plug into my smart plug.

Thanks for reading!

[Edited by Moderator]

Hello guys! I have had the same problem and with my iPhone 12, I would still have like 30-40 % charge in the evening. With the iPhone 15, I would need to charge it again at around 7 p.m., which is quite weird. Now I have read that this could be due to iOS 17 with a lot of apps not being able to "cope" with it. They suggested a forced restart, and I have to say, that this helped a bit and my battery is not discharging at the rate it used to.

Here is the link on how to do it:

Force restart iPhone – Apple Support (UK)

Hope it helps!

It isn’t fixed. I got the iphone15 pro max 2 days ago and the battery drain is shocking.

I have longer battery life now (at least 10 - 12 hours per day) on iPhone 15 Pro after closing all apps, plugging in the power cable, then rebooting the phone. Before this “fix,” iPhone lasts for 8 hours at best.

I slowed my battery drainage down considerably by turn off Bluetooth, selection the shortest duration of screen awake, not letting apps run in the background, changing wallpaper f and much more! I used 50% in 12 hours, it was much worse before I changed the settings! We should not have to change all the settings to prevent battery drainage! Apple needs to come up with a resolution for this equipment flaw with little to no wear and tear on the buyer. Send another new 15 pro and the customer can factory reset the old one and return after transferring data and settings to the new phone!

This is very true turning off the “always on display” does make a difference. The other things I noticed with my iPhone 15 Pro and iOS 17+ was related to ““background app refresh “”and Siri running on everything, writing on every single app in the background. it takes some effort to turn off the “background app refresh” for every single app, even if you thought you switched it off by flipping the one main toggle switch. in reality you have to individually turn off “background app refresh” on every single app individually one-by-one. You can see this in the battery history that apps continue to run in the background for every single app despite flipping that one toggle switch. There are so many things running in the background on this phone and IOS, including Siri. Siri is taking up a tremendous amount of battery drain on the iPhone 15 Pro and turning Siri off for most, everything one-by-one helps with the battery also.

now I get at least 18 hours of battery life from a full charge every time. Give or take. So look closely at “always on display ““, carefully look at “”background app, refresh “for every single app, individually, turn it off, and turn off Siri individually for every single app. This among changing a few other settings, helped my battery a lot.

I tried to delete my original message, to no avail.

What seems to have worked for me:

• I backed up my iPhone 15 Pro yesterday, then reset it.
• Turned off "always on."
• I've been closing apps when I'm finished with them.
• Turned off auto update for apps.

I charged my phone to 100% last night. It's now 6:45 pm, and my phone is still at 69%. Fingers crossed that this solved my issue. Hopefully, it will work for someone else.

I know it's very frustrating that you have bought a new phone and facing the drainage issue, let me assure you these are very premium devices and its very less likely that we can blame apple for this, however the drainage depends on how you use your iPhone and which power consuming apps, settings are enabled on your phone. While I researched on this issue online and found that there can be various things you should do in order to reduce the drainage, these include, turning off background refresh for certain apps, turning off location services if you are not using it, and force restarting. There are many more other tweaks as well. I can suggest you this guide gave it a read and apply the fixes if this could help: 7 Proven Steps to fix iPhone 15 Pro Battery Drain Issue

I just purchased the 15 pro max and noticed the drain. I turned off the Always On Display and background app refresh which seems to have solved the problem.

I turned off the Always On Display and background app refresh which seems to have solved the problem.

As much as l observed, l detected the problem with battery. l wanted all my friends who bought iPhone 15 pro max to look at the production dates of the batteries.

I determined that all iPhones with battery production dates in OCTOBER 2023 have battery drain issue. But I see that there is no problem with iPhones whose battery production dates are in September.

PLEASE LOOK YOUR BATTERY PRODUCTION DATES :  (and writes your dates)

SETTINGS-GENERAL-ABOUT (at the end)