iPhone 12 battery draining fast

Guess what? 137 pages of battery drain topic, so yes, others are expecting the same problem. Nevertheless, it will be good, you as a new owner, to report your problem directly to Apple support in order to increase quantity of cases and pressure on them.

If moderators delete all comments related to the battery with the next update, is such a disrespect to everyone’s hopes and time following this because there are almost no comments from people that are on the new one. Aren’t we allowed full transparency to know what exactly is going on??????

dianeptr wrote:

If moderators delete all comments related to the battery with the next update, is such a disrespect to everyone’s hopes and time following this because there are almost no comments from people that are on the new one. Aren’t we allowed full transparency to know what exactly is going on??????

You mention transparency and Apple in one sentense. You are kidding right? You can can count down to your and mine message about that being deleted, just wait. Ignoring way to long complaints is a strategy.

After the lack of adequate support from Apple, I tried using a second carrier in my country (had a backup sim). Just like the O2/EE case people have described here, I did not see the battery drain on the second carrier (Jio). Surprisingly while I use this carrier, I dont see the option Voice & Data under the Cellular (Mobile) Data Options whereas this was where I could switch between 4G and 3G in my previous carrier. The new carrier also shows up as LTE in place of 4G (previous carrier) on the top next to the signal bar. The problem seems to be lurking somewhere in here.

I am now considering to switch to the second carrier after a few weeks of testing using the backup sim. Unfortunate for my previous carrier to lose out on me due to Apple's bug.

Different carriers indeed do offer different options when it comes to 3G/4G(LTE)/5G. The difference in your available options reflect that. I have a dual SIM situation and depending on the carrier (Data Plan) option I select, I have different Voice & Data options. In a nutshell, it's carrier dependent and is not directly connected to the battery drain issue. What might be happening though, is that the phone communicates with different carriers in different ways and the battery load thus might be different.

I will try to explain it better with how my overnight drain is with different carrier and settings

Carrier A - voice and data set to 4G

Overnight drain with 0 activity - 20%

Carrier A - voice and data set to 3G

Overnight drain with 0 activity - 4%

Carrier B - no option of voice & data, shows up as LTE

Overnight drain with 0 activity - 4%

I am thinking the bug might be lying somewhere in these selections. I’d be happy to see if any users on EE and not seeing overnight drain can confirm they don’t see the Voice & Data under Cellular Data Options.

I’ve been through that tedious effort and now have a replacement device which still has the same problem. Apple senior support wants me to run diagnostics again on this replacement device and is not willing to connect me to engineering when I tell all their iPhone 12 Pros are throwing issues. I declined saying i don’t want to be a lab rat and will find a workaround myself.

Just installed it on my 12 mini.

At least 14.4 brought a new modem firmware version.

I am experiencing the drain with Telekom Germany since iOS14.3.

With Vodafone and iOS14.2.1 I had perfect battery life for the mini.

Both are physical SIM.

Fingers crossed.

So 14..4 with modem software 1.42.03 is now released, so we can talk about it: no, it does not solve the drain, still 20% on idle in 8 hours over night.

It is the hardware, seems more evident. Apple seems to be ignoring this and us users. Very sad.

If you want, you can try replacing your SIM card. EE will send you a new sim which will be 5G compatible. If you are on pay as you go, 5G won’t work but the option will still be there.

Or just order a new pay as you go sim, test it, and then transfer your current number later.

Hello, your right ios 14.4 had not fixed the battery drain issue. I lose a lot of battery even with normal usage. With the kind of usage i have the phone should be able to last for about 2 days but thr fact that it at least lasts me a day is a really big thing. If apple is not interested in recognising the problem faced by its users, its time that we take some action. A company like apple is never expected to mess around with customers after charging 1000’s of dollars. Apple customer care, any moderators, if you are reading this and deleting this comment its of no use. Apple has already lost its market and theres no way its getting it back.

That is good to see. May I request you to please post a screenshot of your Cellular (Mobile) data options which is under Cellular (Mobile) data. I have this weird theory where the issue seems to be due to the options that are available under this section. Thanks in advance.

Finally as today I am expecting a call from the engineering team having said that yesterday I installed iOS 14.4 very surprisingly no drain happened last night at all,I can’t say the issue is resolved yet as I have already turned off all the notifications and background refresh including hey Siri so not yet very conclusive.. still very positive

I only lost 3 % overnight after installing iOS 14.4 like you have lots of things turned off will see if whilst using it today things are any better Hope you get some help from your telephone call please update us

seems a lot of posts are disappearing from here ?!

People, being using 14.4 for a week,it's better but the drain continues, don't be happy with a little better and don't give up on calling Apple... and test the iOS with all settings turned on, as it should be... then you will see that the drain continues, not as massive as it was, but still there on standby.