iPhone 12 battery draining fast

Leaving your attitude for what it is, firmware 1.41.00 does not solve this, so if they have a later version there, I would like to know.

And of course Airplane mode is off, otherwise I could not use my phone for 4G, a phone is used to, well phonecalls, so turning that of is nuts in day to day use.

I guess you will be in for a big disappointment coming weeks when you will notice it wasn’t solved for you as well.

As you said: just wait. Just wait and your phone will drain again just like all ours here...

Cmon, what am I going to wait?)

im using that fw since day 1 and already for 2 weeks, everything is totally fine) as I said, you are the only one reporting that issue persist on the latest fw, all the other are reporting that it is solved, including me personally.

so I see no reasons to believe in thoughts of 1 guy that cannot actually test his device with turning airplane On for a night to test if it is a modem issue or not)

So your problem in that moment could be tested and solved only by yourself. So if you are able to find a sequence that solves that issue - just find and report it via feedback app if you are using the latest FW version. You would never find a solution here, because it doesn’t exist.

Hi,

I'm also on newest software and thus modem fw 1.41.00 and I also still experience some idle drain. The situation has improved over 14.3 but this is still not solved. Usually I loose between 8-10% overnight.

I feel like it is also increased. Some minor tasks like browsing safari (reading news etc) consume quite some battery, but it is not very consistent. Sometimes when I browse for a longer time period the overall drain is not too bad. Only in the first few minutes the battery is draining more. Also I found the camera to consume a lot of battery, but I am not sure whether this is normal for an iPhone with all the computational photography going on.

For me it helps to reset the Network Settings and keep the wifi turned off complete ( crossed wifi sign in controllcenter )

5G is turned auto and Not testet with lte only yet

DND and bedtime is on ( 21:00 - 7:00 )

flightmode off

BT is on

iOS 14.3

when wifi is on it drained 20% overnight. No aktiv app screen in the battery setting

when wifi is off ..... just ~4-6

test it 👍🏾

Please can you tell us what is the latest update -my phone had battery issue on IOS14.2 ( which it came with) and 14.3 has made no difference. Is it possible to update modem firmware independently of IOS update ?

I held back in getting the 12 Pro because of the apparent battery life issues posted on this and other forums. I picked up my 12 pro two weeks ago and it’s been superb. I came from the 11 pro which had superb battery life but I think the 12 pro almost equal but perhaps marginally less in terms of life (I still have 50% at end of most days). I’ve 5G turned off as I don’t need it and background app refresh off. It’s a very snappy phone and in my opinion is quite a big upgrade from the 11 Pro though I note many others may differ in opinion. I’d have no hesitation about recommending this handset.

I had Apple on the phone, they believed me having that problem without asking further the questions.

they suggest to “update” Via recovery mode, so I exchanged 14.2 with 14.2. No I guess I have the same problem again and 14.3.

Maybe this problem is a little bit older:

someone tried to reset all settings without deleting content as described at zdnet

www.zdnet.com/article/iphone-ios-13-6-battery-draining-fast-for-no-obvious-reason-try-this-fix/

I’ve had the iPhone 12 Pro Max since it became available and the battery life isn’t as good as my 11 Pro Max.

Even while using WiFi and light web browsing with Safari, once the battery hits 99%, it drains rapidly.

Also, when I plug in the iPhone to charge it and when/if I reset it, the battery loses life doing that — while plugged in. Last night, I plugged it in at 99%, and restarted the iPhone. When the phone came back up, it was at 96%.

Apple support ran diagnostics on the phone and said everything is fine. They said best option is to wipe out the phone and reset the firmware. I won’t be doing that. That’s not a solution.

Anyway, my iPhone 12 died tonight from 100% at 23.00 (11.00 pm) to nothing at 11.30 (am) this morning.

But hey, complaining is not allowed, so see it as a statement to prevent this message from being removed.

[Edited by Moderator]

Ha ha, that happens. Apple reads this forum very well. If you really know what the technical problem or even solution is and they block that, that would be new. You would have to report that to a tech magazine.

if you just had an idea containing three letters C, A, L Then everything is fine

MacPear wrote:

Ha ha, that happens. Apple reads this forum very well. If you really know what the technical problem or even solution is and they block that, that would be new. You would have to report that to a tech magazine.

if you just had an idea containing three letters C, A, L Then everything is fine

Read very well? But besides reading not a word for support or even ‘we are looking into it’ or anything helpful at all... :-(

Can confirm that this method works. Had the battery drain issue. I had thought it was because I was using facetime nonstop. Tried to isolate the problem. Bg app refresh off, changed sim, airplane mode. Still leaving it at 100% before going to bed, I almost always wake up with around 85% with no app running.

then I gave this method a shot, settled at around 4-5% drain overnight with wifi on and airplane mode off. Heck, can also go full 8hrs continuous facetime via wifi.

— iphone 12 pro max 256gb ios 14.3

i’m not quite sure about the name of the method. But it seems to be a force shutdown of some sort. Steps would be quick press on volume up, quick press on volume down, and about a 10second hold on the lock screen button. All done in quick succession. One thing to note is you should be holding that lock button even after the ‘slide to power off’ screen appears.

after it turned off, what i did was wait for about 5 minutes, turned it back on, and charged it to 100% with all network settings off, including wifi. Hoping it works for you too

I don’t get the crazy overnight drains like some users have reported but across the day I find the battery of my 12 pro max seems to drop even if it is idle. Like 1-2% every hour even if I’m not using it. I have iOS 14.3 installed, full strength signal for WiFi, on LTE off 5G, Bluetooth toggled off.

I also have the 2020 11” iPad Pro on exactly the same settings and the battery does not drain on idle. I go to sleep with 87% at 1am and a wake up at 9am with 87% conversely on iPhone 12 Pro Max that battery will drop to 80%. The only difference is my iPad Pro is WiFi only model so I suspect it’s the iPhone 12 Pro Max modem.

tried resetting all settings and the hard resets but it doesn’t solve the problem. I even occasionally get random apps draining in the background overnight despite having killed it before sleeping. This was never an issue with my xs max