iPhone 15 Pro Max battery drops faster after iOS26 update

[hajime]

Anybody else has this problem? Usually at the end of the day the battery was like 70% or more but after the update, it became 39% today.

 

[BigMcGuire]

My wife is having massive battery drain after installing the update (this morning). She has the same phone as I do. I have had no problems on my 15 Pro Max. Yes, I know it's the first day, so we'll see how it does tomorrow.

I just did the volume up volume down and held power to reboot her phone to see if that improved anything. (Will report if this helps).

So, she's dropping at a 2-3x faster rate than normal. Granted, usage is a little higher too...

 

[hajime]

Thanks for sharing. I just checked the battery usage history for the past three days.

Min:

9/15 16%
9/16 22%
9/17 61% (Didn't use as much as the past two days but ended up higher usage!)

I hope this could be fixed soon.