Latest iOS update 17.6 shortens battery life on iPhone

Yes, my iPhone 15 Pro battery has been taking only 5 hours from 100% to 20% ie Low Power Mode and completely crashing below 10%. Literally the day before updating it was a good 18-24hr cycle. Hopefully a bug to be fixed? This device is too new and way too expensive to brick inside two years. Real planned obsolescence vibes imho

Has anyone else had an issue with shortened battery life with the latest iOS update 17.6?

No

Unfortunately I did not have iCloud backup on so now I cannot go back to 17.5....

Even if you did, you would not be able to go back to iOS 17.5.x. Remember that updates are a one way street and you can't go backwards.

There is quite a bit of housekeeping that needs to take place after an update. Give it several days before you judge any change to expected battery life.

I was about to pay Apple for installing a new battery but I suspected a problem with the new iOS and I read your posts.

The battery of my iPhone SE 3rd generation is crashing really fast since the new update of iOS 17.6.

Apple says that a "good battery" is when it's over 80% of its capacity.

Mine is at 86%.

It's not normal that the battery crashes so fast if I do nothing with my iPhone.

I will cancel the replacement of my battery and wait.

Thanks for your comments !