iPhone 15 Pro Battery Drain Issue

After days of working with Apple and resolving all possible to stop battery drain and issues not receiving phone calls, it was suggested to see if Verizon (carrier) could contribute to fixing these issues. It turned out there was a lot of data clogging the network that needed clearing. The Tech Coach was very helpful and the matter of not receiving calls - that were going straight to voicemail was finally resolved. Apparently this can happen with a phone upgrade, so always good to have carrier do a diagnostic running the Rescue app. About the battery draining quickly, it was recommended to do a recalibration of the battery by charging fully to 100% > wait up to an hour > then fully charge the phone again and wait another 10-15 minutes before using the phone....so the battery understands the upper and lower limits of the charging cycle. There were a lot of other recommendations too on how to save battery - some helpful (not running apps in the background) + turn off auto update on the apps and do this 1 or 2x daily manually rather than have everything running all the time. This was the same for doing the software update - when it was set for auto update, it never completed due to the network being clogged. I also turned off all the apps I don't need Siri to be working with....just the ones I use. Conclusion - take time to set up a new phone from the start. Work both with Apple and with carrier tech to review best setup protocols and any important changes when you upgrade your phone. Be patient, so that the first solution isn't to return the phone or go to the Apple Store for a reset - as that may not begin to solve anything if there are issues with your carrier.

Apple staff from WTC was RUDE when I went in for this issue.

He was condescending.

Told me that the battery works fine and that I have to adapt to the technology since the new tech drains the battery faster.

He couldn’t understand why it was an issue.

I told him I value battery life over marginal improvements from the new tech and the product wasn’t fit for purpose.

I could trade in for an iPhone 13 Pro for half the cost.

After my recent os update and turning off background app refresh, the draining issue stopped.

It only continues to happen when I record lots of videos bc I think there is a lot of ai rendering built into how the camera works especially in dim lighting.

But I seriously doubt some of apples quality based on this experience. Assuming they overloaded the device with software that is battery intensive. Also the customer service was disappointing. Never had an issue before with service before.

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

Settings > Display & Brightness > Always On Display

I took the battery optimizer off and did the update and mine is waaayyyy better!! Within 2 hours my phone was down 20% with minimal use. Within 10 hours, it was dying. Since doing those things, my phone lasts day and night!! I took it off the charger at 8 this morning and it is now 2:35 in the morning and my phone is still at 28%. They told me for the first couple of weeks the battery would drain faster because the phone is optimizing trying to get your pattern down so all you have to do is turn the optimize off. Hope this helps

I took the battery optimizer off and did the update and mine is waaayyyy better!! Within 2 hours my phone was down 20% with minimal use. Within 10 hours, it was dying. Since doing those things, my phone lasts day and night!! I took it off the charger at 8 this morning and it is now 2:35 in the morning and my phone is still at 28%. They told me for the first couple of weeks the battery would drain faster because the phone is optimizing trying to get your pattern down so all you have to do is turn the optimize off. Hope this helps

I would return it within the first 14 days or if you can’t make a Genius Bar appointment. Most believe it is a hardware issue that might not be fixed by a software update. Explore your options while you can. Only some of the 15 Pros and Max’s are doing this. I personally returned mine and am waiting until it is cleared up before repurchasing. Good luck.

I was able to get better battery life by going to Settings > Display & Brightness > Always on Display (toggle off) I went from an IPhone 13 Pro Max to IPhone 15 Pro. Set the new phone up from my most recent backup… all my settings changed over properly but I did notice my phone wasn’t “going to sleep” right away when locked. This must’ve been draining my battery. Hope it helps!

A few of us explained: not enough to switch off all the apps that drain the battery. Also turn off the always on screen. And then you need to re-set the iPhone from a Macbook ideally or iTunes, as a NEW iPhone. Sadly you'll have to re-install everything again, but for me it did the magic. Ever since battery is fine. But it only works if you wipe it of and reset as new. If this does not work, have it changed. So many people moan here but don't utilise the one year warranty. There are options, use them!

Try re-setting from iTunes and from a Mac as a NEW iPhone. Annoying and you'll need to download everything again, but worked the trick for me. Not ideal but as Apple still denies any issues with the 15pro series, this is the only option. They told me they change the phone if this does not work, but it did.

Try reseting from a Mac or Itunes as a NEW iPhone. Worked for me, annoying to set again and download and set all the apps but since then working. If that does not do the trick, use the warranty and have it changed. I went into the Apple store and showed to the Genius bar guy who was watching my battery draining in front of him and was offering the change. But there is no stock... pfff. I was lucky because since the resetting my battery and phone is fine.

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.

Mine drained 20% in the span of 2 hours. After disabling the 'always on' display my battery life is back to normal.

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.

There is some options what I hope that helps.

1. Turn on Low Power Mode - To do it, go to Settings > Battery, and then all the way on the top, you can toggle Low Power Mode
2. Turn on Dark Mode and turn the brightness lower. - Go to Settings > Display and Brightness > and select Dark Mode. To set the brightness lower go back to the Display and Brightness Section and you can change the brightness there, you can also do it by swiping down from the top right corner and changing the brigthness there.
3. In the same menu, Display and Brightness, adjust auto-lock in the auto-lock menu and also Always on Display can put the battery down. To change that, in the same menu, that is display and brightness, you can find Always on Display, for better battery life, turn it off.
4. Keep it between 32°F and 95°F (0°C and 35°C), that is the temperature range what Apple recommends your iPhone should be in.
5. Turning off Background App Refresh. - To do that Go to Settings > General > Background App Refresh and turn it off.

I have same problem. Went from 11 Pro to 15 Pro. 100% Battery to 22% Battery by 3pm.

****** They just released 17.0.3 10 min ago, it’s less than 500mb so go download it now and let’s see if it helps the heat and battery !!!