iPhone 12 battery draining fast

Excellent findings, and you are correct. The iPhone 11 series has much better battery life when compared to the updated 12 series. Hence why I'm on the fence to return my 12 pro and get 11 pro max / 11 pro because I care about endurance.

I tested the device without the SIM again and noticed it dropped 4% over 11 hours on idle. Which is not too bad. On an 11 series this probably would of dropped 1% on standby. But, for what it is, the standby drain, in my case, is much better without the SIM card inserted in the 12 pro. Although the battery life is not as great as the iPhone 11 pro, your device should not be draining 15-30% while there is NO ACTIVITY :| and apple needs to send out an update asap to fix this.

I am sorry Apple but it is not normal to loose battery at this rate with this use (answering texts and mails) on a Pro Max ...

We are talking of a 1400€ phone sold by a company which is the largest market capitalization in the world!

Actually this is a software problem that occurs all of a sudden, and in my case I could solve it by restoring iOS via recovery mode ( iPhone connected to my Mac with a cable, similar to forced restart but you keep pushing the button on the right as long as the Apple logo disappears and the logo for the recovery mode appears).

As you can see on the screen shots, one day to another the battery drained much faster even though the phone was used much less.

What do you mean by « hard reset » ?

Carloo1, to whom some reference, describes the « force restart » Anyone tried the method « reset all settings » ?

I was once successful to restore iOS with « recovery mode », however I got better things to do..

I haven't done a hard reset, nor reboot as it is more what you meant no?, until now. But I am not the user who is facing the worst drain also.

I have of course already done several normal reboots and I never seen any noticeable difference.

Here is what I get yesterday, the phone was at 100% on Sunday at 6:31pm and hit 0% on Tuesday at 9pm approximately.

Not so bad would you say, but loosing 50% in 24h with only 2h05 of screen time seems really huge to me.

iPhone 12 mini.

What do you think about this? 👇

Use: whatsapp, Instagram, two calls, settings, no heavy apps like games or camera or YouTube.

(P.S.: Night drain only 3% in 8h because airplane mode ON).

Please tell me if it’s good or bad!

iOS 14.3, O2 UK as a main line with eSim line disabled.

I’m using 3G and it doesn’t even help, forced restart doesn’t help either, Siri is off, background refresh is off, screen wake is off, basically anything possible is off.

Only airplane mode helps. This is terrible. The only option left is to try the version which is not allowed to be mentioned here but not sure it’s worth it because some reported that it does help. Not sure what to do.

Can’t return the device anymore. But the device is not fit for purpose, this should allow the return in UK?

to day vent for testing a camera on my iphone 12 pro max and thats happen everything by default on the phone just tweek one thing for camera record video 4k at 60fps with hdr on phone was on on camera mode sometimes filming, boom like jump from the cliff from 65% to 19% in a bout 40 min. other than that battery pretty good over night and days just this video making drains a lot .gonna check tomorrow with fully charged battery.

Hi guys, I also noticed this problem since I started using my iPhone 12 Pro (on day one). With my previous XS it never happened. I'm attaching my screenshots as well:

And here is the battery health:

I have dual SIM setup with 5G off (since it can't be turned on with dual SIM), and only one data plan with auto switch off. Still, as many users reported, even turning data and wifi off for testing purpose wouldn't solve the issue: the battery would still drain as before.

It looks like the drain is independent to the utilization that could hopefully be solved via software update, but I found this behaviour only on 12 PRO despite having other models like X and XS on the same OS version that work fine.

It would be nice to have some words from Apple itself on this phenomenon.

Dropping this here to whoever it might be applicable / helpful.

Those who do not have 3G option OR use Physical SIM as Primary for 4G Data can easily skip.

Device: iPhone 12 128GB

Location: India

Physical SIM provider: Airtel

Voice & Data: 3G

eSIM Provider: Airtel

Voice & Data: 4G

On the aforementioned settings for more than a week now with consistent results.

Also note that I am on WiFi most the time (95% plus), with WiFi calling enabled. WiFi, Bluetooth and Mobile Data all was turned off during the night (~7 Hours) i.e. non-active hours in the chart.

Below is the battery usage report for Dec 29/30.

✌🏼

i had an iPhone 12 mini (UK-o2) had the drain so returned and purchased an iPhone se 2020 2nd gen, I have been using it for over a week all good and last night draining started same uk-o2. So it’s not just draining on the 12’s.

all background activity off, mail on manual fetch. Bluetooth and cellular off only think on was WiFi.

So upset that it’s started again, i don’t charge it over night so very frustrating when I need to charge it again before I leave for work in the morning. On 14.3 and 100% battery health brand new device.

Connection doesn’t seem to be an issue for me but the battery still drains in idle. I’ve tried everything, like different types of restoring, 3G, force restarts, turned off Siri and background refresh. No luck...

I also tried the point four update. Still the same.

Constant battery drain without a change

My iPhone 12 Pro worked fine, with a logical and expected battery usage, for the first two months. Then suddenly about a week ago, without me changing anything on the phone or in my usage patterns, I started losing 50% - 60% of the battery charge overnight with no activity whatsoever (see graph from last night attached). I have executed my own investigation over all the usual suspects (background processes, notifications, mobile data, resetting the phone, etc. ) but nothing helped. I have contacted Apple Support, they ran the diagnostics on the phone with the conclusion that there is nothing wrong. I intend to give it another week or so to see if there comes a software solution but then I intend to demand a replacement.

My previous messages have been deleted - and I'm sure this one will too - but I'm not using 14.3, it's the next one.

Below you can see the battery drain is normal, last charged to 100% Sunday 10:23AM and currently at 13% on Wednesday 19:15PM with 'normal' everyday use (web browsing, calls, listening to music etc).

I upgraded from the XS Max to the 12 Pro a few days ago. I immediately noticed this issue as I don’t usually leave my phone on charge overnight. I lost over 20% during my 6 hours of sleep while my phone was idle, with 5g off !

This is an alarming amount of battery drain and I’m kind of regretting my decision to buy this, I’m worried this is a phone defect and can’t be fixed with a software update. Does anyone know if Apple commented on this issue?

Tonight I will be doing a battery test with my XS Max and 12 pro. Both will be 100% charged, and both will be set to Airplane mode. I’m almost certain of the result but just want to be sure.

I attached a picture showing the 12 pro losing just over 20% between 3am - 9am last night, with no activity.