My iphone 12 is just 2 days old and I am facing really bad battery drain overnight. I had almost 90% left for couple of days before I had gone to sleep and woke up with a remaining battery of around 65%. The battery chart has nothing for these hours. And moreover my mail push is set to manual and I had turned off wifi, bluetooth, location and mobile data. Is there something I can do to stop this?
[Re-Titled by Moderator]
iPhone 12, iOS 14
After a couple days of experimenting.
Let me give you scenarios/examples with no regard to any other settings other than those mentioned being turned on or off.
iPhone 12 Pro running iOS 14.3
SIM card installed, WiFi on, Cellular On, Bluetooth in Standby (Turned off in CC to disable new connections, but still enabled)
Battery drops between 15 and 30% over an eight hour time frame while not being in use. (This was the case for a couple days, until I realized something was clearly wrong)
SIM card installed, WiFi off, Cellular off, Bluetooth standby same as before
Battery drops around 10% over the same time frame (Better, but still not satisfying)
Now get this!
SIM card taken out, Wifi on, Cellular off, Bluetooth same as before, I also turned Airplane Mode on for the sake of it
Draining between 1 and 3% , over the span of 8 hours.
I know, it seems absolutely silly to use an iPhone without a SIM card, but as long as this bug is not fixed taking out the Sim card might be your best option to prevent your battery from draining over night. Or you just simply keep it on a charger. Keeping the SIM and at least turning off WiFi and cellular or putting the device into airplane mode should make the battery drain a little less too.
Some other things you might want to switch off, if only to test for a couple days to see if battery life improves and slows the drain. Keep in mind, you can disable everything temporarily and don't have to worry about anything breaking. If something needs a certain thing enabled, iOS will most likely give you a prompt anyways. You can go back and enable everything again, but until a version of iOS 14.3.x or 14.4 is released that addresses the those kind of issues, it's the best and to be frank, the only thing you can do.
System customization also updates in the background constantly ( if you turn it off, Dark Mode/ Appearance will still be able to work in sunset/sunrise mode, night mode however will work only when you put it on a custom schedule, and optimized battery charging will not work (even the option itself in the battery menu is enabled) if you have Significant Location and/or System Customization disabled).
I don't mention any of those things like turning off Background App refresh, dimming your display etc as those can be found in literary every 'iPhone battery savings' video or article.
It is clear that the issue can be pinpointed to the cellular modem, which can only be put into completely pause if there is no SIM card in the device. Airplane mode alone does not seem to fix the issue fully nor does turning off Cellular data help much if anything.
Cool. I see the my iPhone 12 draining at the rate of 4% an hour only when connected to wifi. If my wifi is off I never had my phone loose more than 6% in a span of 9 hours.
This is getting really annoying waiting for a fix from Apple
Hey everyone. I started using my brand new iphone 12 mini 3-4 days ago. The battery lasts good throughout the day (for me at least coming from an old iphone 7) but at night it always drops average 20% (sometimes less usually more). I never have wifi on during the night, i always close the apps running like a control freak, as soon as i got it i even followed a youtube video on how to improve battery by turning off a bunch of stuff. I only charged it with the cable apple gave and a fast charging block. But during the day i dont notice this huge drainage. Two days ago i took it at work and after a 8.5 shift, with 20mins usage of the phone during my break and it only lost 10%. So i dont understand what’s differenr at night. There’s no different in drainage at night whether battery is at 40% or 90%. If somebody figures out something please let me know 😰😰
(right now im typing on my old iphone 7 12%, was 30% before i slept and i fell asleep on tik tok, while my iphone 12 mini only had an alarm clock went from 40% to 20%)
On my iPhone 11, I had no need to disable any of these and the battery life would be an easy 2 days. On the iPhone 12 Pro with the same apps and settings, it needs to be charged often twice per day. It's nothing to do with background app activity etc, it's something to do with the phone itself.
It's also not dual-sim related, I've tried both physical sim and migrating that to the eSim, and still have exactly the same thing going on. Really not impressed :(
does anyone know if this a universal problem with the iphone 12 line or is it just several phones and we need to change our faulty ones? My 4-year old iphone 7 with a damaged battery works slighlty worse than my iphone 12 so im really not happy about this development in my 2-week old iphone 12
iphone 12 mini update here. I thought some settings i turned off helped, and one night they did but ever since i am back to losing 20-25% per night. I have turned off even more things like my night shift schedule, all background app refresh, all data connection options. I even use low power mode when i get below 50%. I am very upset, this is the worst battery i’ve experienced on a new phone and i hope they come up with a solution fast.
Charged to 100% before sleeping and after about 7 hours, dropped to 89% :(
So it appears it’s software related, unless I have also received a defective phone for the second time, which is unlikely.
Have to wait for software update over the coming days.
I just wish I could figure out why the screen won't shutoff after receiving an alert. It doesn't do it all day long, but every single alert that comes through at night.... keeps the screen backlight on until I wake up and hit the side button. I have watched it for 5 minutes and it doesn't shutoff and almost any time I wake up in the middle of the night... my screen is on. I am convinced this has something to do with it. I just can't figure out why it doesn't do it all of the time.
Yesseter wrote:
Why I should charge the phone over night?
Because it's good practice and makes sense. When you put the phone on charge and lock the screen, if it's connected to WiFi, it will automatically back up to iCloud (assuming you have that turned on). When you wake up in the morning, your phone will be backed up and fully charged. A better question is "Why would you not charge if over night?"
When to charge your iPhone or iPad - Apple Community
Nope, it's not written anywhere, it's not must do, it just makes sense.
Not figuring out why your battery is draining is the real issue. Waiting for an Apple iOS update is foolhardy. But wait you can. And be frustrated you likely will continue to be.
Okay, so we will all charge our phones over night in order to hide issues with battery drain. Very intelligent proposal. Almost the same as having a car without lights. So instead of pushing manufacturer to repair my car, I will not use my car during the night.
It's not an issue for the vast majority of owners. It is an issue if you haven't isolated the cause on your phone. Waiting for a software update to come is not the best solution for your issue. It may never come.
i am also experiencing similar problem in my 12pro max. Staring from iphone 7 plus i have used all the models of iphone and the last being used 11pro max but never experienced this problem, this is so frustrating. When in idle battery is draining at almost 4% per hour with wifi and mobile data off
Same story with my iPhone 12 Pro I got a few weeks ago. The battery is draining overnight on standby with all the apps shut. My habits didn’t change and my old iPhone 11 Pro would use just 1-3% overnight, the new iPhone 12 Pro is using 20-40% with 0 activity and I often find my iPhone 12 Pro dead in the morning.
I doubt that. I havent used mine since i got my ip12 mini. Oh sorry, havent installed. I use YT music as my main and have deleted apple music since. Still having drain issues.
but suprisingly, my phone did not drain this night. Look
Guys just an update, i havent seen any drop on my battery after several days. No modification on settings whatsoever. I think this waa triggered by the new IOs update so im positive to give yours sometime and will get fixed.
iPhone 12 battery drain overnight
