iOS 16.1 Battery Drain

Same issue. Battery life started to worsen with 16 then I did 16.1 and it’s horrendous. Drained to less than 20% from a full charge 12 hours ago. Phone say unused for most of the day with minimal background processed running. Nothing else changed except iOS 15.x to the new 16.x updates. Help me apple!!!!

Same problem here with iPhone 14 plus, doesn’t last a day, gets pretty warm with simple tasks and hates playing music will chew through battery with music playing through phone speakers while in standby mode.

New iPhone 12 mini with a fresh battery and drains 20% battery with minimal activity in 3 hours running iOS 16.1. Restarted the phone several times, turned of indexing, Live Activities and no widgets. This is ridiculous!

Judging by the responses it looks like there are hundreds of people experiencing this issue (including myself). I got the 13 pro and my battery doesn’t even last me for the day. My battery health also suddenly says 93% after consistently being at 98% for 3-4 months prior to iOS 16.

Updated to 16.1.1 last night. My iPhone 13 Pro was charged to 95% before going to bed. In the morning, the battery was at 15%

Since my iPhone is unusable for me at this point and I refuse to succumb to the Google / Android ecosystem, the only choice left is Murena Fairphone 4. 

So long Apple. It’s been fun, but not really. 

First, I buy (for a lot of money) Mac Mini and MacBook Pro 16 and month later Apple announces that they are diching Intel so the hardware I just bought (early 2020) is now worthless. Now I buy a new iPhone, again for a lot of money, and I must charge it 3 times a day. Since September, it’s going to be 2 months now and fix is nowhere in sight. By the time this is going to be fixed, I might have to get a new battery lol.

All together in my family we have 11 apple devices, which will all be slowly replaced other non-Apple devices. It will be a difficult road, but we will eventually break from this unhealthy addiction on Apple.

I got you bro/sis, initially it only took 5% for 30 minutes of gaming in 14 pro, but now it took 10% of the battery. I'm reading this discussion and just found that the culprit could be the IOS 16.1 update. I'm thinking of reverting back to factory settings.

I reseted my phone multiple times in the last few weeks. Not only because of battery drain. But theres no change. I would like to go 15.4 or 14 (and watchOS 7) but thats not possible. With this versions everything was fine.

I have similar battery drain issues. Also with the latest iOS 16.1.1 update. My iPhone 14 Pro doesn't last one day without recharging it twice a day. This is frustrating, especially with a new device and no beta software.

If I check battery usage in the settings. Home & Lock Screen is always on the first place. Which is really strange. Hoping for a fix soon.

Updated to iOS 16.1.1 and this did not solve the problem. The phone will still suddenly start consuming battery like crazy. Toggling off the WiFi or putting the phone in low power mode has no effect. Makes me think that there is some form of runaway process problem here…

I bet if you keep Wifi OFF and then also turn OFF cell data, the battery drain will stop. You will basically have only a phone (without any data). You can also experiment with turning cell data back on and turning off data for each application separately in the cell data setting at the bottom. That is what I did. I just allowed a couple of apps to have data turned on and the battery is great. Interestingly enough, in my case, I had Contacts consuming 8 GB of data and 90% of battery. I have about 400 contacts. As soon as I turned off data for contacts, the battery drain stopped. But I think it's random. For you, it might be some other app that has a runaway process.

I also upgraded to 16.1.1 in hopes there would have been a fix for the battery issue on my Iphone 11 Pro but it is still ongoing. This upgrade really messed up my phone.

when is Apple going to release a proper fix for this?

I had the same problem, that since iOS 16.1 my iPhone 12 Pro was empty within hours, even though it was only carried around in my pocket.

After a few days of analysis I found the cause:

As soon as iCloud is activated, the battery problem starts.

I observe a massive data consumption in the mobile data network.

So I reset the data consumption statistics in the settings and observed which app generated the consumption.

In my case, the address book (contacts) was massive in data usage.

I turned off iCloud syncing of Address Book (contacts) and lo and behold, battery consumption returned to normal.

I would also like to note that I had previously analyzed the processor load via Xcode on the iPhone and it was permanently unusually high. Only after disabling address book (contacts) synchronization did the iPhone's average CPU load drop back to a normal level.

My conclusion:

There is probably a bug in the address book (contacts).

I hope my post helps you.

Thank you for your feedback.

I think a step by step analysis e.g. as described by me using Xcode process view and step by step deactivation of app functions will help here.

Of course, it could also be another app that is using the processor heavily for a longer period of time.

Many greetings

Marcus

I have also noted an unusually high data consumption on my contacts app. It is reporting un excess of 7 Gb of data usage over the mobile network. Almost 25% of the comparative data usage of the Safari app. Syncing contacts could not possibly reach this level of data usage under normal circumstances.

Yes — I was able isolate culprit to Siri and Find My apps. It seem got better once I turned off “listen for Hey Siri” and “reset location and privacy settings”…. Apple under Cook has turned into MSFT of of early 2000s - boring and full of bugs… (eg Windows Me and Vista)…

PS: I have 13Pro Max