iPhone 15 Pro Max Battery Health Dropped To 99% In Less Than A Month

My brother and I purchased the new iPhone 15 Pro Max when it released in September. At the beginning the iPhone was overheating even when charging. I also noticed that the battery would drain very quickly. I charge my phone up to 85-95% & only charge it to 100% when I know I will be out & about all day. But most of the time even if I do go out all day the max I charge the phone to is 95%.

I checked my battery health and it says 99% which is insane & NOT normal for a brand new iPhone that’s not even 2 months old. My brothers phone is at 100% on battery life and he is CONSTANTLY on his phone.

I’ve contacted apple and they have done their little test and shows that everything is fine but they don’t give an explanation as to WHY the iPhone has dropped to 99 in less than 2 months as well as to why the battery drains so quickly.

My iPhone is also updated to the latest IOS 17.1

I’ve had iPhone since the 4s & this is the first time I have experienced my iPhone battery health dropped to 99 in less than 2 months & the battery draining quicker than my old iPhone 13 Pro Max that had a battery life of 83% after having it for 2 years. I have always been careful with battery health & hardly charge to 100% and have gone 1-2 days until needing to charge my iPhone.

is anyone else having this issue? Apple hasn’t been very helpful and says my phone is fine even though the battery performance has been horrible even after the new update they claimed fixed the problem. I’m still having this problem & it’s coasting the health of my battery.

I shut off all background app refresh to see if it helps & so far it seems to be doing a little ok but the fact that the battery performance has been bad I’m very disappointed with apple.