iPhone 12 battery draining fast

That is the EXACT problem! You buy the phone, you have issues with it, to try to get help to address the problem, Apple tells you to, “try this and if it doesn’t work try that.” You do it and you call back, “Not fixed.” Then again, “ do this, that, then and when then we’ll know why and we will go from there.” It’s a vicious cycle that only feels as if we are being runaround until after the return with refund window closes. And when it does... we no longer matter. Then we are screwed.

I recommend, with Apple Supports help, making 2 attempts at fixing a specific issue AND that is it. Do not waste your return and refund window debugging your way outside this window. Let the problems with the phone be APPLES problems to FIX, not yours.

Hey so which device were you using before?? 12 pro have only 2000 something mah compared to most of other android devices which has around 4000 to 5000 mah that’s too low and 12pro have small battery life compared to 11pro

Me too. Went from 33% last night down to 15% this morning...down to 3% by the afternoon. 12 Pro Max on 14.3 Vodafone UK Single Physical SIM. 4G (no 5G). Same drain as 14.2.1 and 14.2 and 14.1 basically. All that time I didn’t use it at all except to check the battery life on 2 occasions for no more than 10 seconds a time. 11 Pro Max on the same network is still on 69% and it’s been very nearly 2 days since I last charged it and it has over 3 hours screen on time already. On average I get around an hour of usage per 10% battery on my 11 pro Max (unless I’m gaming) and overnight drain is always less than 5% (usually around 3%). On the 12 Pro Max I’m lucky to get half an hour out of 10% battery and overnight drain is around 15%.

Hi all

I have the same issue

iPhone 12 pro max with dual sim

no abnormal drain if 4g is on physical sim ==> 1% every 2 to 3hr at idle: ORANGE operator

abnormal drain if 4g on e-sim ==> 3% every hour at idle: SFR operator

I am quite sure that this did not occur when I had physical sim on SFR too (before my company change into ORANGE)

I have 14.2.1 s/w: I understand that even 14.4 is not fixing this, is it?

I am very disappointed!!!

QUESTION please: is the issue occurring only to people having activated dual sim &/or to ones having e-sim only? May you please advice?

Thanks

Emanuele

Thanks for the reply: I personally bought this iphone because of 5g capability and it is a shame to be obliged to set 3g on. I really hope that 14.4 will fix it even though I have a likely valuable workaround of using the physical esim 4g with a very good drain at IDLE (3-4% in 8hr). I have never seen this on my iphone XS max but it is true that I had the same operator on the dual sim configuration.

Further feedbacks on 14.4 beta 1 behaviour would be very appreciated

Thanks all and have good and safe XMAS and end of year holidays

Rgds

Here are the renault after one night from 11:45pm 10:45am (yes a long one), knowing that it has 2 SIM, it has been charged yesterday at 0am, I have done a network reset yesterday afternoon and it is connected to the wifi during the night and at the office.

as a comparisons there is how my 11 Pro Max drains with the same settings without SIM and only with wifi. I will restore it tomorrow afternoon and use it Monday and Tuesday.

This isn't a memory leak. Memory leaks have a very specific set of symptoms, and a power drain would be very unlikely to be one of them. (I've worked in embedded software for 25 years - I've seen (and caused...) more than my share of memory leaks, and I've never seen one cause unexpected power consumption.)

So battery drain is back. Reboot and network resetting didn't do the trick after all. I'm losing an average of 7-8% battery after an 8-hour standby.

I put my 12 Pro Max on standby for 24 hours and the battery went down from 100 to 90% VS my brother's 12 Pro Max which went down from 100 to 81%. Same network and same settings.

I think I will stop obsessing on the battery from now on. It's not good for my mental health.

Also, when I put my 12 Max on idle for 1 day, I charged it using the 18W wire charger. On the other hand my brother charged his using the magsafe charger before putting his 12 Max on standby for 1 day as well. Just something I noticed.

This is unreal situation and you could never explain that from the side of physics. This is a "visual" bug, because a modem uses enough of energy and takes some millivolts/hr to reconnect to the Base station or check the connection that has already been established before and then get a response from bs. This process is quite frequent to use some battery. So 1% is 28mAh for iphone 12 and that is just nothing to a modem.

nlnl88 wrote:

I can't try 3g anymore since my carrier (Orange France) has updated the carrier options to 4G or 5g only.

Very sorry.

But at the moment, only the choice of 3G solves the problem of fast battery discharge.

5G or 4G costs between 10% and 30% overnight in standby mode.

nlnl88 wrote:

But I still tried to disable cellular data (no 3/4/5g), without any improvement.

I've been testing for three weeks now.

Before turning off cellular data, you must select 3G.

Selecting 4G and turning off cellular data does not reduce battery consumption. I don't know why, but it is.

You have to wait for an update iOS from Apple.

Went to Apple store yesterday they looked at my chat history with Apple Costumer Service, no explanation nor aknowlegment of any problem they just gave me a new unit. Went home to set it up and it wouldn't connect via Cellular data at all. Went back this morning after 30 min diagnosis they told me this unit had a defective modem/antenna and swapped it out for another replacement. This time I told them that I wanted to set it up right there. This 3rd Iphone 12 pro max would not even recognize my SIM Carrier. So I just insisted on a refund. Will wait until Apple makes a statement and fixes the issue. In the meantime Ill try a Pixel 5 and see how things go.

Good for you 👍

The sooner Apple investigate and fix this issue the better it will look for them. I’m considering insisting on a refund and going back to using my XS Max until around 2 months after the iPhone 13 is released to make sure everything runs smooth with that. It’s the Qualcomm X55 modem causing these issues and there isn’t a chance Apple or Qualcomm will be able to fix this with firmware/OS updates. The Qualcomm X55 has proven to be problematic on Android flagships.

So after almost a week since 14.3, the battery drain on my 12 Pro Max hasn't been fixed while my brother's 12 Pro Max has been having great battery performance.

Mine - 24 hours standby, 100-80%

My brother's - 24 hours standby - 100-98%

I think some people in this thread have very wrong understandings of what a battery drain is supposed to be...

First of all, don't brag when your phone is staying at 100% for a long time, since the iPhones INTENTIONALLY don't show accurately when the phone has been plugged off the charger, in order to give you more confidence.

It would not look good in the eyes of the user, if the phone's battery indicator dropped 1% exactly when you take it off the charger, right?

Second, some people here seem to think that ANY battery drop is bad and not the way it's supposed to be, like, they talk on the phone for an hour or use social medias extensively, and get mad when the battery drops...

P.S. Please, when you post those huge screenshots, MENTION YOUR MODEL, otherwise you are not helpful.