iPhone battery draining after iOS 18 Update

I am also having the drainage issue after updating to iOS 18. What I’ve looked at is my background app refresh. You can turn this option off for each app running in the background. Settings>Apps (Apps is at the very bottom) There is also a setting called Clean Energy Charging. I’m going to test that too. Hope one of these options may help you. I’m in testing mode right now.

I purchased my iPhone 16 pro on Friday. Battery is draining super fast, around 1% every 2 minutes of just general texting! Run diagnostics with apple support who say there is not issue. iOS 18 wanted to update again even though I am already on ios 18. Someone mentioned waiting a few days to see if it ‘learns how I use my phone’ and see if it improves. I replaced this phone due to poor battery on my 14 pro max and I’m seriously unimpressed.

iPhone 13 Pro

• Wednesday (09/18) - iOS18 update
• Thursday (09/19) - Even after hefty activities which requires to use phone, my iP13P usually last the whole day without charging. however, this day I had to charge my phone through a powerbank at school because around 3pm my phone was around 15% already. Phone was 100% around 10am. Notice the drastic change?
• Here comes the issue:

Battery Health—

– 09/18 83%

– 09/19 82%

– 09/20 81%

– 09/21 81% (barely used) but battery drained I had to charge 2x

– 09/22 80% (9am)

– 09/22 79% (11pm)

iOS18 sucks and now I’m forced to replace my battery!

I have same issue of drain battery health after ios 18 update my charge cycle is 240 and battery health 100 when i update my phone.but after update its drop by 1% every 4 charge cycle and its now 96% on 259 charge cycle.

I have an iPhone 13 Pro and after updating to iOS 18, the Health of my battery went from 100% To 94% and my battery is draining by 11 AM when it used to last until about 6 PM. Apple needs to fix this immediately!!!

I am also facing the same issue as after the recent update, my iPhone battery was draining so fast that I went to the customer support office thinking if my iPhone battery needs to get replaced but came to known that it is due to the update.

Since updating to IOS 18 my iphone 14 drains so fast , I contacted Apple and they did a diagnostic and could see it was draining even when not using . They need to send out a IOS update to help everyone as this is ridiculous, my phone is dead by 9pm

Same here. My iPhone 15 Pro battery drains about -20% more than before the update. My usage levels are the same. I am using the custom icon colors, but in all black with dark mode. Thought that might improve battery life, but apparently not in any significant amount.

One bug, or not a good new feature, I noticed is that when I my wifi hotspot is not in use, when I shut my connected device off, it remains connected unless I manually turn off hotspot. Before, it did that automatically. But I turn it off manually right away every time, so I'm not sure if that's causing extra battery drain, just annoyance.

It could be the bloat. The iPhone has so many features that I don't need or want that could free up space. For instance, I was really surprised about all the "accessibility" features there are, like eye tracking, etc. Cool stuff, but I don't need or want that on my phone. iPhone is extremely bloated. We need the option to delete unessential features like those.

My iPhone 13 battery lasts maybe 2 hours now. It won’t charge to 100% anymore and when it does charge, it takes 10 hours to get in the 90’s. My phone is CONSTANTLY on the charger which is VERY inconvenient for a mother who is constantly driving kids around. When I try to charge, it tells me liquid in port when there is actually no liquid so I have to emergency override to even get my phone to CHARGE….. seriously regretting coming back to Apple. An update should not do this to a phone I have had since July.

I immediately downloaded 18.1 after going to iTunes to find out why I had also lost my WiFi connection on my iPhone 14 as well… ended up that I had to turn off my VPN and switch to “Safe Browsing” with my McAfee premium security… but the battery issue was even WORSE with the overheating! I found out about the WiFi connection issue on my own by accident and just fidgeting around, but I had already gone through settings and done it all- none but the absolute minimum on background app refresh, etc. No amount of rebooting or waiting days for everything to “settle in” has made it better. As much as I dislike the Android version of phone, I’m seriously considering getting a Samsung with the far superior camera and its editing capabilities… as Apple and their pitiful developers have missed the mark on far too many things; the annoying “notch” at the top of our screens, the loss of contacts or whatever when we have updates, etc.

I guess we have to wait and cross our fingers that they get off of sitting on their tail feathers and actually FIX the issues that we’re having… and don’t make things even worse. I thought when I immediately got the 18.1 right after the 18.0 it would fix it. Nope. I mean, what the Hello Kitty, Apple?!? How are we to trust you or even be loyal to the Apple brand???

I have ended up using low power mode 100% of the time, helping but still not great definitely something in this update. Rather than new features more focus should be made on optimizing battery life 99% of people don’t use 90% of iPhone features but 100% worry about battery life!

Same here . I have a 14 pro max and have been able to listen to Iheart radio app all day at work. I updated 3 days ago and 2 of those 3 days- my battery is at 2-4% at the end of the day from listening to the app. Today…. I had no battery and just shut off

After the hassles with overheating and several battery drains each day following IOS 18, I was looking forward to 18.1 as a fix. No such luck.

My battery can go from full to less than 40% in no time - several times a day. It still overheats frequently. When the two combine I'm then stuck with a phone that won't charge because it's too hot.

I've turned off every possible setting. I removed widgets. I've removed and minimized all app permissions and settings with no success.

When I check battery usage, I see my Home & Lock Screen has 40+% usage. Never had that issue prior to this update. I have Always On Display turned off. Already mentioned deleting widgets. My brightness is not high. It really makes no sense.

I'm beyond frustrated and I feel my phone has been seriously downgraded since I can't use it how I have in the past or want to.

Apple should and can do better. I've lost a lot of trust and will no longer be an early adopter of updates.

Currently on 18.0.1 with the 15 pro max. I have the Apple magnet charging device for wireless. Noticed it was getting hot on charging and would only get to 85%. I switched to the USB-C cable and no change. If I power the device off, it will go to 100% (not get hot) then turning back on, quickly drains to 85%. I got it October 2023. In my experience, the latest update made it worse.

Yeah I’m waiting for the IOS18.1 to drop Oct 28 & hopefully battery life is back to normal. That’s what people are saying about IOS18.1. I recommend staying on iPhone until Oct 28 & see if battery life is still have issue then I’ll recommend upgrading to Samsung but I’m an apple person to I won’t be switching to any other phone.