I have been using an iPhone 15 (256 GB), and ever since updating to iOS 26.5.2, the battery performance has noticeably deteriorated. The battery drains much faster than it did before the update, even though my battery health remains at 88%.
***
[Edited by Moderator]
iPhone 15 Plus, iOS 26
There can be many reasons why a battery drains faster after an update. Apple even addresses this in this link --> If the battery in your iPhone or iPad drains too quickly - Apple Support. It is expected for the first few days after an iOS update, your battery will drain faster as it has to reindex the millions upon millions of bytes of data on your phone. This can last 4 or more days.
At 88% battery health, your battery is not too far from needing to be replaced. When the health of your battery dips to 80%, you'll see a notification that battery service is needed and you're not far from that date and it will then be time to pay Apple to replace the battery in your iPhone.
Social media apps, such as those from Meta (Facebook/Instagram/WhatsApp) are notorious for chewing through an iPhone battery. Meta has to release updates multiple times a week to fix bugs they create. Personally, I force close these apps after use because of this.
If you want to see what is using the battery the most on your iPhone, open Settings > Battery and wait for the apps use to populate. I wouldn't be surprised to see the social media apps are consuming a lot of your battery. Only Apple doesn't own these apps.
Finally, after every iOS update, the first thing I do is Force Restart my iPhone and I never have battery drain after an update. Do this and keep the directions handy for the future --> Force restart iPhone - Apple Support
What model iPhone and iOS version are you using?
26.5.2 update and iPhone 16 pro max
Same here. Updated several weeks ago and I now have to charge my phone by early evening. Not using it any differently than before. iPhone 17th max
Exactly the same with me on 17 pro max
Same with my iPhone 17 pro max.. it’s horrible
Now that I think of it more the ”adaptive power notification” has kicked in twice after the update where as in the past it has never before happened.
What did the technicians say when you took the phone in to the Apple Store / Genius bar, or an authorized Apple Service shop?
Send flowers to Apple. Your battery is doing better than normal. Whatever you are doing, keep it up.
I have an iPhone 16 pro battery health is 94%. Since I updated to IOS 26.5.2 about 8 days ago my phone has been draining battery about 30% faster every day. What is the problem.
the computer would restart on its own . worst
lowela208 wrote:
the computer would restart on its own . worst
Put your computer posts in the Mac section
Thanks, but I think you missed my point.
My iphone battery life dropped after the software update.
We cannot be forced to reduce the efficiency of our phones, to me this is just wrong.
Cheers
Worst battery backup after 26.5.2 update.
