iPhone 16 Pro Max Battery AFTER iOS 26 Update

Hi all!

When iOS 26 came out in September, I jumped on making sure my iPhone was updated. After the update was complete, I had zero issues. But now, starting Oct 6, my battery is DRAINING incredibly quick. I’ve never once had battery issues with this phone - I’ve had this phone since December 2026. The battery health is still at 100%.

For context, I keep my phone plugged in overnight, and by 2pm, I’m at 30% or less in battery life. I don’t fiddle too much with my phone throughout the day as I have demanding job.

Before anyone comes at me - yes it is updated to iOS 26.01; yes, all my apps are updated. Background refresh is turned off and auto-brightness is enabled.

I’m at a loss because I’ve never once experienced battery issues quite so badly ever before. I care for my phones and keep them updated. I’ve seen a number of posts about this, but every recommended tip is everything I have set up on my phone already. If there is anything anyone else can recommend or has insight into, it would be GREATLY appreciated.