iOS 15.0.2 update

No.

Some have reported greater battery usage, but that is likely because after installing a new iOS version, the phone needs to update several internal databases, so it will briefly use more power than usual.

Be sure to check Settings -> Battery for any applications that may be using more power than usual as well; some app vendors do not yet have their apps properly optimized for iOS 15.

Take your phone in to be examined, it sounds like it may be a bad battery.

If that’s the case, it didn’t break because of iOS 15.0.2, but rather iOS 15.0.2 revealed it to be weak/bad.

If that’s the case, a replacement battery is $49:

iPhone Battery Replacement - Official Apple Support

Genius Bar Reservation and Apple Support Options - Apple

Yes. I'm an iPhone 8 user - it was working properly until I updated to 15.0.2. It ruined my phone. On the first day it drained the battery within a couple of hours, turned off with 39% charge. Then got worse. Apps quit unexpectedly, iphone turns off though it's fully charged. It only works while connected to a power source.

Tried re-installing iOS twice, didn't work.

Kind of desperate here - totally depend on it for work. Apple killed my iPhone.

At 2% per month, 12 months would bring it down to 76%, but Apple will also replace any battery that falls to 80% or below within the first year of ownership for free.

Batteries age, this is an undeniable part of the technology.

iPhone Battery and Performance - Apple Support

um Really Not Happy,, After Update ios15.0.2, ******* Drain My Battery, my Battery Health Was 86 it’s after And Some use, It’s Became 84 Just Only In Few Days😵‍💫,

I Can’t Even Belive Tho.

My iphone 12 pro max battery health drop 2% after ios 15.0.2 updates

Apple states a drop of 1% - 2% per

month is normal.

That’s ridiculous!! So by next year my battery health will probably drop by 50%, then i have to upgrade?