Extreme battery drain in iPhone post update

I’ve got the pattern: Apple does something without notifying me on my iPhone XS, then for a short period of time it returns after last update of minor version to normal battery usage ONLY to keep user patient and make user to upgrade to the next major version. Every time after such upgrade (don’t tell me to reboot and update apps, it’s always done) the battery is draining again. So, the question is only: what exactly Apple is doing silently on iphones?

standby battery timing is worse on my iPhone 15 Pro Max after updating to 17.5.1. every night i charge my iphone to 100% and turn off wifi aswell. the battery drop from 100% to 90% daily without even touching my iphone. it

Same issue - noticeably excessive battery drain after 17.5.1 update.

Same issue across 3 devices - iPad Pro / iPhone12 / iPhone SE 3rd Gen.

Devices been used in same manner since new, no changes made to settings and then hey presto after update, having to charge more frequently and battery draining even when devices sat not being used.

I have the same issue!! It’s the first time that i have to charge my iPhone 15PM twice a day!! I don’t know if it is because the software or the hardware itself!! Because it’s nonesens that the battery’s performance got to be impacted by the update of ios!! Normally the update should come with improvements not with the same issue of draining of battery!! I think this is a disadvantage of the pro processor of iPhone pro!! I hope apple fixes this issue with the upcoming updates of ios…

I’m having this issue too with an iPhone 13 Pro Max, fortunately a MagSafe charger charges it. Although it does drain so much faster than it did before and now lightning charging isn’t working. I’m so glad I came to these forums before replacing batteries and what not.

Hey there, I have the iPhone 15 pro max 512GB storage and recently upgraded from iOS 17.4.1 to the latest 17.5.1 and the battery life from 17.4.1 was awesome lasting almost 2 days before needing another charge. However, unfortunately that is not the same case with 17.5.1 I have also been experiencing extreme battery drain while doing some of the least resource demanding activities such as safari browsing and social media. Today I have experienced a battery drain from 90% to 84% within the span of 8 minutes, which never happened before. It is really spoiling my happiness and excitement for having the current latest and greatest iPhone yet. For $1,500 spent at apple all up front for the phone does not feel like I got a good deal. I hope apple fixes this battery drain issue as well as connectivity issues with cellular and WiFi.

We use one Apple SE 3rd Gen and one 14 Plus. Both phones were backed up before initiating the update to 17.5.1. The Apps are all updated, those that are not used are turned off - no background refresh, cellular data turned off etc. We haven't changed any settings on the phones.

Unless I overlooked it, I haven't seen anyone from Apple posting recommendations!

If that many users are complaining about rapid battery drainage after updating to IOS17.5.1, wouldn't it be fair enough to assume the root cause for the rapid battery drainage is an Apple issue?!

I update my 14 Pro to 17.5.1 yesterday and battery drain instantly went down 20% , Phone stays constantly hot! and phone used to last all day no problem now my phone drains battery life like crazy.. I charged my phone overnight and it only got to 77%??? my Battery Health says 92% and I have had it plugged in to charge at my desk for the last 20 Min and it will not move up from 75% ( battery icon is green and shows lightning bolt ) My Phone worked perfectly 2 days ago now I have major problems....this is ridiculous

me too iphone15 pro max after 17.5.1 updated , battery significant drain but on the other hand i’ve felt my iphone run faster and looks faster in UI and application running

so maybe faster battery drain come with faster engine

Same here! Hubbys phone gets so hot on or off the charger and his battery drains 20% every hour even without use it’s ridiculous so we’re gonna call customer service and see what they can do for us cuz we rely heavily on our phones for work

i upgraded yesterday, from my iPhone 11 with battery life bellow 80%, to a brand new iPhone 15 pro. I must say, I find it strange the speed that it is discharging. 100% at 8h. It’s almost 23h now and I have 14%. I didn’t even have the phone much use. I don’t think it’s normal, as my wife’s iPhone 15 that she also bought yesterday is at 54%. I really hope it’s a software issue.

Same here. At 8:21 AM my phone had 100% charge. Cut to 7 hours and 18 minutes later with MY NORMAL usage and I’m down to 15%. My battery life is normal with 193 cycle counts and first use only in 11/2023.

Since nothing else has changed with regard to my iPhone (usage, damage, additional apps or external devices ), I can only conclude that the upgrade to iOS 17.5.1 has caused extensive drain issues on my battery.

Apple fix this immediately!!

Why you answer in that forumn it always user error alway it not mine usage behavior i'm use my iphone 14 pro with normal use but now my phone was broke now battery drain very fast and too much bug it because it software dev not my phone problem if you call that answer in that forumn it problem with user error you don't write in this forumn please ! Ios since ios 17 updating phone not working now apple please re read this forumn! And write software properly Please it very bad software dev to release software to people to use it mine can't used my phone at single charge now screen on time it only 3-4hour only!

Same here. I just got iPhone 15 Pro a couple of months ago, just for the battery performance. I was streaming on youtube almost 8 hours nonstop, and at the end of the day my battery was 30% after updating to 17.5.1 now I need to charge the battery midday just browsing, no streaming. This is terrible

Me too. Since updating my 1TB iPhone 13 Pro to 17.5.1 it's been unusable. Battery health shows 100% but battery charge can drain from 100% to the red zone in less than an hour, even if the phone isn't being used. Sometimes I get up to six hours, but that's nothing compared to the nearly two-day life I had before the update. What I currently have is a £1,000 plus paperweight!