iPhone battery drain after updating to iOS 16.3

Same with Xs. The latest 15 was excellent in sense of battery, since 16 battery drains super-fast, some point 16.1 fixed, 16.2 broke again, 16.3 fixed the problem partially, but not even comparable with latest 15. Anyway with 16.3 everyday charge is needed vs with 15 it was once in 3 days. No any usage, but power goes down constantly. Battery health percentage fits to Apple recommendations, so it’s pure iOS bug.

There is clearly an issue with IOS 16.3 and battery life. Two separate iPads (Air 4th generation). Pre 16.3, battery lasted around 2 days. Post IOS 16.3, battery life is approximately half a day. No change in usage, apps etc. Please fix this Apple.

CSMcBaine wrote: "...My phone is slightly older (11 pro about 3 years old)..."

3 years is typically how long a battery will last before needing replacement – so what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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Kh7575 wrote: "iPhone 12..."

As that model could be 2½ years old, what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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To Apple Staff: stop posting canned answer for this and please escalate this matter. The speed up of drop of power of my iPhone 12 Pro Max after the 16.3 upgrade is EXTREMELY noticeable when using mobile connection. It drops about 2% per minute even all the app with most battery consuming task is forced close, such as Facebook, google map and the screen turn into dimmest setting.

Also, the phone will get HOT and burns my skin through my pants pockets without any reason and checked no background task is running (at least nothing can be observed by end users).

A clean restart doesn't help at all, the battery lost in the same speed at all. The only way to lower the drop is to connect the phone to WIFI.

It not just hjappens on me, it happens to my phone, my wife's phone (iPhone 12 Pro Max), my son's phone (iPhone XS Max)

Is it a little trick that Apple has add to this software release to "warmly remind" us iPhone 15 is going to lauch soon??

Extensive troubleshooting and investigation carried out. The fact is the same issue with battery life has occurred on two separate iPads following an update to IOS 16.3.

Therefore there is clearly an issue with IOS 16.3, battery life and the IPad Air 4th generation.

Just because there are no issues with battery life with some other devices (e.g. IPhone 14), does not mean there are no issues with IOS 16.3.

It almost like Apple did not not take the time to optimise IOS 16.3 for older devices..

Check your mail app, mines burning up my battery in the background - working with engineers now - if thru think I’m hanging around waiting for a software update then they are mistaken. I’m going to ask them to uninstall the new patch I GUARANTEE everything will be fine. I wonder if they will offer me any compensation for three weeks of significant inconvenience.

I have the same issue. iPhone 13 Pro. It's held battery life like a champ, usually lasting for days at a time before needing a charge. Now, after upgrading to iOS 16.3, my battery is visibly draining throughout the day. I now need to charge at least once if not twice a day, even with most applications closed.

I'm angry. Apple just made my new $1300 phone just as good as my iPhone 7 that I just got rid of ... please fix this ASAP!

It’s happened to my XR (80% capacity) after the update to 16.3! Same for my iPad, same for my wife’s iPhone 11 Pro and both my daughters iPhone 13’s. Now charging at least twice a day. Also locked screen is now just a black screen. Closing all apps (which is not the intended use) doesn’t help. Turning off cellular doesn’t help and what’s the point of a mobile phone without cellular when you travelling. Please fix this urgently.

iPhone 12. I’ve tried all the tricks mentioned and gotten minimal improvement. There’s some kind of drain related to the latest IOS update. It’s a fairly regular occurrence with updates but there’s usually a fix quite quickly after the update but not this time.

Also, I was on a trip to another city. And discharging suddenly stopped! The battary usage graph became an almost horizontal line, especially at night, as it should be. But then I returned home and the battery usage graph returned to a usual diagonal falling.

I don't know what caused this, because I tried to turn off Wi-Fi and didn't help.

I have 16.5.1 on my brand new iPhone 14. I’ve had this phone for three months. Since the update, which was a week or so ago, my battery has been awful. It was lasting all day and now I’m lucky if I get three hours. And I’m talking it’s going from 80% to 20% in a matter of minutes. It sat in my purse all day while I was taking a course. It was 100% when I started the course then went down to 20% not even four hours later when I went on break and took it out of my bag. It wasn’t overheating and it was in a very cool, air conditioned room. I’ve checked my battery health, it’s at 98%, then I checked all my apps and none are running in the background. What is going on!? How can it drop that much after not being used!! Even my old iphone, which I had for years and the battery was crap, wouldn’t drain that fast.

The standard answer isn’t the answer. Battery drain is much more noticeable after the update regardless of the other settings mentioned. The battery life, with the brightness & WiFi, weren’t this bad before the update.