iPhone 15 Pro Battery Drain Issue

In the end, playing with the network connection of the 15 Pro, I have concluded that the battery drain is somehow connected with the GSM/Carrier connection. If I set the phone in AIRPLANE mode, but leave WiFi ON & Bluetooth ON, the drain goes away. In the picture, there are 4 zones:

A: Overnight with all stuff ON, airplane OFF

B: Airplane mode ON, other stuff untouched (other stuff turns OFF automatically when AirPlane is activated).

C: Again, all features ON

D: Airplane mode ON, WiFi ON (forced and checked by using internet), Bluetooth ON, Location ON, Background App Refresh ON.

So I got an iPhone 15 Pro for Christmas and I have no battery issues, yes for the first few days I did but that is expected, I am running iOS 17.2.1.

If you are experiencing battery drain I would suggest you factory reset your iPhone via a Mac or PC and then recover from an iCloud backup that worked for my iPhone 13

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

They are like that for the first couple of weeks because the battery optimizes your usage. Try turning your battery optimize button off for a day or night, restart your phone and see if that helps

You should contact Apple Support and have it investigated under warranty.

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.

I don’t think the first few charge cycles of an Iphone battery see any change in capacity whatsoever. As for restoring new phone from backup and synching settings, pics etc, unless you are talking massive volunes if data a day will see that all done. Location services were my biggest drain. With Safari location setting switched off as soon as I opened any web page the location setting status icon appeared (what gives? Bugs perhaps?) Turning off Location services totally has nade a difference but using maos then requires swithing loc services back on and to precent rinsing battery, turning loc setting back off, hassle! I think exchanging phone a waste of time, clearly Apple have either some Ios bugs to zap or more ominously, the 15 pro is destined to provide pathetic battery life to all who have one. Rumour has it the 16 pro and max will be bigger. If true thatcwill be to accommodate appropriately sized battery perhaps?

No, I hope this is a software issue, because even on battery save and switching back to 60hz does not solve the issue. It miche be a problem from "find my" or a 5G problem,

GPS off might make the problem better, but I almost always need gps, I tried to turn off gps use of most apps and even some system features using the privacy settings.

Also now I am back in an area with good cellphone coverage and the battery holds better.

When I experienced the most drain was in a very crowded area (Milano Duomo Galleria on saturday)

so it is probably an issue with aggressive search of network (mobile network)

but anyways my 14 pro max in the same place same day was NOT affected.

JustinJustinJustinJustin Said:

“This response is a complete waste of time.: Brand new iphone 15 Pro with no change in usage from my 13 Pro. Yet, here I am, on day 2 of having the phone, googling why my battery drained from 100% at 8AM to 38% by 2pm.”

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If you can’t troubleshot this on your own…

Get this serviced.

Take to an Apple Store;

Setup a Genius Bar Appointment at your local Apple Store. Report back what Apple has to say on this

Take it to an AASP (Apple Authorized Service Provider) for Assistance.

1. Go Here: Find Locations - Apple Authorized Reseller
2. Click: Service & Support
3. Enter: your location information
4. See: if there is an AASP nearby
5. Contact: an AASP that shows up, and find out more about the services that they offer to fix the iPhone

jamene179 wrote:

Me too. I have nothing on except WiFi and my battery looses charge very quickly

Have you tried giving it a week and seeing what your battery is like after that? According to the Apple support advisor I spoke to the other day, it takes 24 hours to a week for the phone to index itself after an iOS update.