iPhone battery draining after iOS 18 Update

iOS 18 draining my battery

Last night (17/09/24) I upgraded to iOS 18 update but this morning when I started using the phone, my battery drained out very quickly - anyone had similar issues.

any solution please ?


[Re-Titled by Moderator]

iPhone 14

Posted on Sep 17, 2024 2:06 PM

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Posted on Nov 3, 2024 5:07 AM

It’s the photos app. I’ve had things like background app refresh, dictation and location turned off for years. I have about five (non Apple) apps installed (no social media or entertainment type) and I use my iPhone 15 Pro primarily for talk and text which never accounts for more than 5% of my battery use, even on a heavy use day. I went from holding a two day charge to charging twice a day immediately after iOS 18. I noticed in Battery Heath that Photos was using 32% of my battery in the background which was alarming because I don’t use Photos in that capacity, and for the fact that I have background refresh disabled. My solution was to turn cellular data off for Photos entirely. (Settings > Apps> Photos > Cellular Data> toggle off) It’s been about a week and my battery is holding almost the same charge it did pre-update. I hope this helps!


Apple has essentially overhauled the utility app into their own version of social media, riddled with unnecessary AI and it’s working as such. Imagine it as uploading 5,000+ photos and videos to Instagram all at the same time. As long as you connect to WiFi periodically, your photo’s will continue to sync to iCloud. I don’t use the app much, but I can’t find any reason to have Photos running on cellular.


Side note: I do not connect my iPhone to WiFi on a regular basis. If you are constantly connected to WiFi, this fix likely won’t work for you as the app will continue to run in the background via WiFi and there is currently no way to disable this function (hence the issue).

490 replies

Sep 20, 2024 8:50 AM in response to Mis73

Shocking! Same here I update two days ago and my batterie is draining hardcore as well! I just bought the new IPhone 16 Pro Max which arrived today ans my IPhone 15 Pro Max is loosing power like crazy now. Batterie Health is down 5% in two days. Has anyone managed a fix here?


I am supposed to sell my IPhone 15 Pro Max. Which now is going to be a time game! Please advise.



Sep 20, 2024 10:13 PM in response to Mis73

Same to me, once I upgrade IOS 18, my phone battery drop a lot, even during I sleep, 2nd day wake up, the battery drop a lot, before upgrade, I no need to charge my phone during working,(I very less use phone during working), but after upgrade I need to charge it during working 🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️, regret to upgrade 😔,Apple, pls help to expedite resolve it. Thanks

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iPhone battery draining after iOS 18 Update

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