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iPhone 12 Pro 12 Pro / Max Night battery drain [Merged]
- Thread starter ka111n
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Same problem here with an iPhone 12 Pro pacific blue 256Gb model. I have it since last 17th November. Despite this night draining issue, the battery is amazing compared with my previous iPhone X (Although it is in a very good mod with 90% battery health).
I hope this will be solved in a soon iOS updated. I remember there was a similar problem when iPhone X was launched, and it was solved by software.
To discard any hardware problem in my new iPhone 12 I decided to turn it off during last nigh and everything seems ok, it retains the 70% it had when I turned off.
I hope this will be solved in a soon iOS updated. I remember there was a similar problem when iPhone X was launched, and it was solved by software.
To discard any hardware problem in my new iPhone 12 I decided to turn it off during last nigh and everything seems ok, it retains the 70% it had when I turned off.
If people have to go to te extreme lengths of quiting every app and disabling all wireless connectivity to save battery life — why not just turn the damn thing off?
This is still a problem? So strange. I took my phone off its charger last night at midnight. It's now 8:35am here and my phone is still showing 100% even after checking a couple of emails and CNN news.
EDIT: My mistake. It's at 98%
EDIT: My mistake. It's at 98%
I was never a math genius in school but what on earth are you talking about?
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In my experience the mini will stay at 100% longer than any other percent. Once it drops under that, it drains faster. I also seem to notice a quicker drop off in percentage below 50% when compared to 100% down to roughly 50%.
Well, one thing I was responding to is the people who say they leave it unused overnight and see a huge drop by morning. Even if it's unused there may be a lot of processes going on in the background. The following video was a great help to me:
In addition to that, google "battery saving tips for iphone 12"
Other than that, I have noticed that it depends an awful lot on just what I am doing with the phone that will make it drain the battery faster rather than it being on 100% or elsewhere. But this is so with any phone. I used it an enormous amount yesterday and it went from 100% when I woke up at 6am to about 70% by about 9pm...again with an awful lot of use. I think that's pretty good. I'm actually pretty impressed with battery life on the iphone 12, but I think you do need to tweek some background stuff to get it there.
In addition to that, google "battery saving tips for iphone 12"
Other than that, I have noticed that it depends an awful lot on just what I am doing with the phone that will make it drain the battery faster rather than it being on 100% or elsewhere. But this is so with any phone. I used it an enormous amount yesterday and it went from 100% when I woke up at 6am to about 70% by about 9pm...again with an awful lot of use. I think that's pretty good. I'm actually pretty impressed with battery life on the iphone 12, but I think you do need to tweek some background stuff to get it there.
When iPhone reaches 94% in reality, iOS displays 99%. After that it’s mostly linear. Use Coconut battery or Imazing to test for yourself. Don’t tell me you’ve never noticed the battery lasts a lot longer at 100%, because until it reaches 94% it still shows 100%.
OK I can accept that. I wouldn't put it past any phone company to intentionally keep the percentage showing higher for a longer period of time to give the impression that the battery is lasting longer than it actually is (or course Apple wouldn't do something like this, right?). It's like designing the phone to show 4 bars when signal strength is -115dBm.
I've seen some posts where people have complained of the battery going from 100% down to below 70% in a few hours with no use at all. If this is happening there is something severely draining it in the background. This is not normal, I'd think it's a rarity, and I'd think that if it's not some background routine that isn't set correctly or turned off if not needed, the phone is defective and should be replaced.
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That problem is specific to the 12 series. We don’t know yet whether it is hardware or software related.
OK, well mine has been off the charger for 13 hours now, has had light use (one phone call, checked email a few times, read some CNN articles) and it's at 87%. I'm satisfied with that. It's honestly no better nor worse than I'd expect from my Pixel 3a and Samsung S20 FE 5G.
Here's my experience testing my 12 Pro Max phone standby and light usage and how the battery has been behaving strangely and unpredictably.
12/09/20
6PM - fully charged 100%
12/10/20
7AM - 100%
11AM - 99%
6PM - 97%
Note: on standby all day
12/11/20
6AM - 93%
12N - 90%
6PM - 83%
Note: with very light usage throughout the day.
12/12/20
6AM - 53% What the 🤬?!
30% drain overnight after 2 days of consistent great battery? What gives?
12/09/20
6PM - fully charged 100%
12/10/20
7AM - 100%
11AM - 99%
6PM - 97%
Note: on standby all day
12/11/20
6AM - 93%
12N - 90%
6PM - 83%
Note: with very light usage throughout the day.
12/12/20
6AM - 53% What the 🤬?!
30% drain overnight after 2 days of consistent great battery? What gives?
I think this is the reason why phones seem to stay at 100% longer:
I have the 12PM
Battery design capacity - ~3670 according to reports.
Actual capacity is slightly higher if you hook up to coconut battery on the Mac - ~3780-3800
The phone battery is calibrated to show 100% for the design capacity (~3670) and any value over it. So for the battery to report 99%, the juice reduces from ~3800 - 3630 and not from 3670. Its coming down from 105- 99 rather than 100. This is probably why it seems to stay longer at 100.
The battery health too follow similar calculation method I guess, thats why coconut battery and iOS numbers differ.
My mini lose 1%/h in stand by. 5-7% overnight in 7-8h.
And an incredible 11% in 40 min call.
Hope next iOS release fix this issue for all of us 🤞🏼
this night, after 7h in airplane mode, i lost 4%...from 31 to 29, but i did an hard reset and it’s at 27% 😩
I noticed with my miband watch paired it lost battery. Although this was at a time Dropbox was also going haywire. Do you have Dropbox installed?
To add, I created a shortcut to automate Bluetooth turning off at 22:30 each night and on again at 07:00 I believe. This has helped on the Bluetooth front.
My mini lose 1%/h in stand by. 5-7% overnight in 7-8h.
And an incredible 11% in 40 min call.
Hope next iOS release fix this issue for all of us
Yep. My 12 battery hardly moves in standby, maybe 1-2% overnight in 7 - 8 hours. However when I start using my 12 it starts to suck up battery even making calls.
It’s weird it has incredible / outstanding standby but decent not bad not so great battery when you start using it.
No... but battery drain has stopped over the first days. I returned my 12 Mini and bought another one, because of display issues, and the second one has normal drain, around 3% in airplane mode. Have to try LTE on and Airplane mode with WiFi on on this device...