iPhone 12 battery draining fast

apparently, some users in the US are also experiencing inconsistent battery performance which is what I’m experiencing right now. I talked to my cousin from NYC and he told me there were times when he would lose 20% battery after a 10-minute call but there were times the battery wouldn’t lose any juice after browsing the web or social media and this is same case with his wife’s. In my case, I’m no longer losing massive battery overnight as it’s now ranging between 3-10% after 12 hours but it has been very inconsistent. There were times I’d only lose 1% after 4 hours during daytime but there were times I’d lose 5% in less than an hour.

Exactly I have the same issue with my 12 Pro from the day 1. I notified it when the battery was at 22% at around 10 pm, and it was completely switched off when I checked my phone early morning at 6 am.

Apple support ran diagnostic test and found no issues with the device and battery.

Service Center told me to reset the phone. I reset my 12 Pro, and restored the backup.

I tested with low power mode on before going to bed at night, with WiFi off, location services off, and I even changed the old SIM and inserted a new SIM. Finally Nothing improved the battery drain.

It drains battery in the same speed with or without low power mode. The phone’s battery drain is almost 2% to 3% per hour without doing anything, which accounts to 14% (2% x 7 hours) overnight.

Here is the screenshot of battery graph with, and without low power mode.

Our only hope is 14.3 that's coming out today.

If it doesn't solve it, have to consider seriously sending it back and try to find an alternative on the Android side that is similar in size to the iPhone 12 mini.

For sure, but he is unfortunately gone :(

Here is the result of the last night, really better than usual but it is still not normal to loose "so much" battery by night.

Especially knowing that my battery currently has 200 mAh more than the design capacity, so approx. 5% more, which means that it virtually goes from 105% to 92% in 6 hours.

I am suffering from the same issue. My iPhone 12 pro max 128 battery is draining very fast. I spoke so many times with Apple care. And in the end they make test on battery using wifi. And they said it’s ok. But it is not. At all. Really I am very disappointed to buy this phone. With such amount of money. At least we deserve a good quality not a phone with draining battery

updated to iOS 14.3 last night, WiFi on, no 5G, Bluetooth off. Battery drain 16%

2.00 am 87%

7.45 am 74%

problem still persists. Where I live they don’t replace the phone or refund :(

really frustrated.

attached screenshot

when typing this message I have lost another 2%. Well played Apple.

over the course of 6 hours I lost 13% overnight, iOS 14.3, connected to WiFi, no background tasks. This is the most ridiculous drain I’ve ever experienced on a new phone. No way can this phone live up to the usage time Apple claims. It appears there is no fix and must be a fault with the new modem. It would be lovely for Apple to actually address this issue.

iPhone 12 Pro Max

I am running out of patience.

Now we have to do everything to get more public attention for the issue and put pressure on Apple to act.

We have to report to the press and online portals so that more articles appear about it.

The consumer protection agency can be informed that a defective device is on the market and the manufacturer stubbornly refuses to admit the problem.

If something does not happen within a very short time, and by that I mean a month at the most, I will return the device and buy a mobile phone from another manufacturer.

Please all join in !

Annoy Apple with the problem: by e-mail, on the hotline and, if possible, in the Apple Stores.

Don't be fobbed off with the statement that it's normal.

Spread the word about the problem on all possible channels!

Hello all,

it seems like this is a general problem from apple.

I'm a iphone 12 mini user and i have the same issue here.

Last night i've charged the phone to 94% and when i woke up after 6 hours it was already 80% . For sure this is not normal, even with updated ios 14.3 it's not working.

My last phone was Samsung galaxy s10 and there is not such a problem like that.

I hope they will fix it.

Really like this iphone mini.

I read maybe 50+ comments about battery on 14.3, in this forum YouTube and others forum.

40% says “battery ok”, 40% “battery worst than before”, 20% “no difference”.

It’s hard to decide if upgrade or not because I lose 1% for hour and I fear it could be worst!

I just updated my software to 14.3 last night and so far my usual 15-20% battery drain is now only 6%...my 12pro max is already ready for refund but i Would still monitor for the following days. I'm still hoping Apple would fix this issue as soon as possible coz i still find 11pro max much better

Replacement iPhone 12 Pro Max

Night 6 Selected 4G, manually selected O2, connected to home wifi, mobile data off, background refresh off, low power mode on

15-12-20 22:00 battery 92%

16-12–20 09:09 battery 75%

Putting aside the battery issues, everything else is good. The hardware is ok I think, so won’t be returning, it’s such a pain to swap over and migrate banking apps etc. Looks like 14.3 probably won’t make any difference to battery situation for me, but not making it worse. Will update today.

Of course it is not the network, it is the device or its software/firmware ...

Almost everyone here has seen a difference between its previous iPhone and its 12, most of us have restored a backup so settings are the same and network is the same as people haven't changed their home place ...

The only difference in the equation is the device itself, so if the result is different ... it is due to the device and not to customer use or settings.

So, first impressions from 100% battery level to now are good. Phone has been on the desk this whole morning, syncing 2 mails accounts and connected to WIFI plus 2 SIMS operational with the local Belgium provider Proximus.

Since my goal is to have a phone that lasts until I go to bed and that fulfill my needs (being a light user), I think I'm in the good track. Would be interesting to know from other people having Proximus if they noticed the same behavior.

I have to say I find it rather disheartening when people on some specific networks, namely EE and Sky Mobile are informing that their battery drain is either fixed or was never even an issue. Meanwhile Vodafone UK here...14.3...exactly the same drain as 14.2.1...exactly the same drain as 14.2...and exactly the same drain as 14.1...why? I also run Vodafone UK on 11 Pro Max and had no issues on ANY of the previously mentioned iOS versions (including iOS 14.3). I also have a cellular iPad on the 3 network with NO BATTERY DRAIN issues (although that DID have battery drain on iOS 14.1 but that was fixed on 14.2).

Meanwhile Vodafone UK on 12 Pro Max...constant drain...even on iOS 14.3. My device is also locked to Vodafone so I can't TRY another SIM just to see if it is the carrier at fault here. What's more, I tried to return it today but they had the cheek to tell me I'm past my returns window and all they can do is offer me yet another exchange (I've had 3 already).

Exchange isn't going to fix a god **** thing. Meanwhile I am paying £68 a month for this ****!