iPhone 12 battery draining fast

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.

I think you are right, the X55 seems to be the cause of all this mess...

It is funny to read this now : https://www.androidauthority.com/qualcomm-5g-powersave-959115/

Qualcomm 5G PowerSave promises 4G battery life on 5G phones

and

Qualcomm 5G PowerSave is supported by all smartphones using the Snapdragon 855/X50 5G modem pairing, and it will also be supported on devices using the brand-new X55 5G modem.

Sartheris wrote:

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.

Of course, it is normal that the battery looses energy when you use the phone, but most of the people here (so do I) compare the behavior of their previous iPhone's battery to the new one and see a clear difference with their own use.

So yes, it is normal to loose battery but the iPhone 12 does it quicker ... and even much quicker.

12 pro with 3-4% drain per hour overnight.

I just learned that I do not have the battery drain at my girlfriend's place. So it might also depend on where you are. She lives nearer to the center of the city, I live at the borders. Maybe different mobile cells are crossing there and the phone does more switching/checking.

Bought iPhone 12 Pro and 12 pro max very recently ( for self and my wife) to replace almost 6 year old iPhone 6 which we both had.

batteries on both iPhone 12s are draining fast even overnight when not being used.

Apple support have suggested backing up, factory reset and then restore. I did that and no real change.

Apple seem to be in denial about this

Will Apple respond?

The situation with this thread is frustrating. Posts with helpful information to this puzzle (and whole discussions responding to this posts) get deleted without any email notification (when mass deletions happen). The terms of use don't mention 'beta' software but prohibit discussion about the moderation of this forums 🤯

Mentions of versions of iOS that have not yet been publicly released as an official release are by definition discussions of beta software. and are not allowed here.

The most current version of iOS at this moment is iOS 14.3.

It would be very interesting to see if the battery drain remains the same after the phone is no longer connected to iCloud. I would test but I do not have a 12

Changes in iCloud can impact performance of an iPhone, iPad, Mac making it feel like you have malware operating in your machine changing how it performs.

Keeping my iPhone 12 Pro Max....just purchased the Apple Care Plus to cover it as well.....though it does annoy me Apple don’t acknowledge the battery problem. Wouldn’t buy an Apple EV car that lost 20% of its charge overnight whilst parked on the drive through. Imagine loosing a full tank of fuel every 5 days ....not a good selling point.

Have had some calls with Apple support today.

battery issues with 12pro and 12 pro max, both bought 11 days ago. Support could not see any battery faults. I tried backup, reset and restore which has not fixed it . I see other posts about IOS 14.4 Beta, but support advised against this.

Apple have agreed to ship 2 new phones and then i return old ones. Hope that resolves issue, but as an electronics engineer i still think that there is something in background draining the battery . Will see. Apple support staff have been very good and a senior guy is keeping in contact with me until it is resolved.

Bonjour Selzere,

I live in France too and I noted that I do not have the same behaviour on physical sim or on e-sim. The former is Orange and the latter SFR. Orange is main line (SFR secondary).

With cellular phone on Orange the idle consumption is about 3%/8hr but it is 5%/9hr on SFR.

Moreover, when calling on SFR (e-sim) the consumption is 1%/8-10min and on Orange is 1%/20min!!!!

Both constatations above are maybe linked to different carrier despite I am sure that on SFR I had better performances beforehand.....==> indeed I do not understand why the modem would not behave the same when being on physical or on e-sim.....

What did you note on your phone (vs the associated settings) despite you have both lines on Orange?

In fine, in your second picture, overnight there is a quite fast drain on iPhone 12 pro max.....I had the same on SFR line but only with 14.2.1 ==> have you checked if you have different “drains” depending on which sim (physical or e-sim) the cellular line is set? Could you check it out (this would be inetresting as you have the same operator for both).

Have you tried the f.4b1? any improvement as reported by other guys in this forum?

Thanks and à plus

NOTE: I am running on 14.3 and I had drain on 14.2.1 (SFR e-sim cellular active) ==> traducing into above data after restoring iPhone to new (no backup) with 14.3 s/w

This issue isn’t iCloud related. I’m 100% sure that this battery drain issue is being caused by the Qualcomm X55 modem. For me, the only questions remaining are 1. Will Apple officially acknowledge this problem?

2 will Apple be able to fix this problem with a software update.

The Qualcomm X55 modem has proven to be very problematic on Android flagships. There doesn’t seem to be any improvement with the X55 on the iPhone 12 series. It’s disheartening because it takes away from people just being able to enjoy their new iPhones.

I haven’t contacted Apple support yet because, for me, there’s no point until Apple acknowledge there is a problem. The very best Apple support can do is send me a replacement iPhone 12 Pro Max out which will have the same problem. This problem is clearly related to hardware.

Fingers crossed Apple acknowledge this issue soon. I bet we will see a lot! More people suffering with this problem after the holidays when people have received iPhone 12 series as gifts etc.

I have a replacement 12 pro max coming as well but dont know if that is going to matter. Spoke with Apple today and they said they think the engineers are aware and trying to work on a fix for it now. I am very close to buying another 11 pro max just in case because that phone was great and now I wish I never traded it in.

If it’s Qualcomm modem, then the drain is fixable via software update: there is no drain in 3G and iPhones use the same modem for all standards( 3G, 4G, 5G). Modems have firmware. So they just need to fix their algorithms for 5G/4G

No, I'm afraid you can't conclude that. Modems do have firmware, but they also have hardware blocks which are not necessarily under control of the firmware, such as the radio frequency front-end. The fact that there is no drain in 3G doesn't mean there is no hardware flaw in the RF section for 4G and 5G. So there's no guarantee that this problem is fixable in firmware; the 4G and 5G hardware may have a fundamental flaw.