iPhone 12 battery drain overnight

UPDATE: Last night my phone was at 100%. I woke up 8 hours later, and it was at 99%. I went into dozens of settings and turned many things off. There were a few "automatic download" type settings for apps and operating system that I found and turned off. Can't remember exactly which ones. I also turned off bluetooth, and turned off icloud backup. All I do with my phone is text, email, and make phone calls. I can manually back it up to the cloud every so often to save my contacts. Can't remember everything I turned off, but it was a lot of stuff. Was surprised how much stuff was happening in the background.

I use my iphone in a very simple way. My car bluetooth audio quality is crappy, so I don't use it. Simple is best. Then I can move on with enjoying this short life. The iphone is just a tool. I use for essential things, and beyond that it's all overkill. Essential to me is communicating with family and work. The sun is out today here in Michigan. I love putting the phone away and heading outside.

I have the 12 Mini. I'm not sure I solved the problem. I'm still checking phone once in awhile to see if it drains. Turned off Bluetooth altogether. And turned off several auto-download things in apps and IOS updates. Also went to SETTINGS, CELLULAR DATA, and then toggled to off Wallet, and Music.

My previous post was modified by Apple because I said that the battery drain problem was NOT the result of phone configuration. I should have said that despite configuring my phone to minimize battery usage, the rapid draining continued to occur, and required me to replace the phone. Users can reduce battery use by various means, but I experienced a problem with my battery that required hardware replacement, and the people posting here quite possibly may be facing the same issue. Hope this post is not deleted.

Well the level 10s must be the geniuses then I guess. Us mere Level 1's are just dummies that should plug our phones in at night I guess. Do I have to agree with other level 10s to be a level 10? Not that I want to be a level 10. I like the level 1. Even though "nothing in my post was helpful to anyone," according to a level 10.

It doesn't take much to understand the value in charging your phone at night while you sleep. Not only will your phone NOT lose any charge while you sleep, but it will also back up to iCloud at night, so you never lose data. It will be fully charged for a days use without having to worry about running out of charge when you need to use your phone. And if you want to preserve your battery healthy and avoid having to prematurely replace the battery in your phone, charging at night with Optimized Charging turned on prolongs your phones battery. But I guess if you prefer to not see the value in that, you just don't get it.

Finally, agreeing with a level 10 won't make you one. The only way ANYONE ever becomes a level 10 is to have helped people, who mark their answer as helpful or having solved their question. It takes many thousands of user awarded points to become level 10. Level 10 supporters have been here for many years helping people. You can stay level 1 if helping people isn't important to you. That's up to you.

I already solved it. I turned off Bluetooth and a few other things and now I don't have to plug it in for days. Goes from 100 percent at night to 98 percent in the morning. Everyone has their own way of doing things. Plugging it in works for some. But if the battery is draining dramatically at night then something is wrong, and plugging the phone in doesn't fix the problem.

jazzrabbit,

Just to be fair, I decided to NOT charge my phone while I slept last night. I didn't turn off Wifi. I didn't turn off Bluetooth. I simply let it sit on my nightstand in DND. My phone lost about 4% of it's charge from when I went to sleep in 7 hours.

If your phone is losing so much when you sleep, you've either got something running in the background which is doing that or you may have brought something over from your last Phone which is corrupt. You may have some setting not configured properly. This is by no means endemic to all iPhone 12 phones.

If I had your issue, I'd restore my phone to factory and NOT restore it from backup, but bring things over, such as Apps, photos, etc.,

I still stand by my recommendation to charge your phone when you sleep as a good practice and one which will preserve battery health long term.

Weird. I added the 4 immediately after I wrote the comment.

I’m sorry but your advice is anything but helpful. I could also get a whole other phone. That’ll fix the issue for sure just like other billions of uses do, but I don’t want to do that yet.

I might have to charge it overnight after all, but not because that’s the right thing to do, but rather because the iPhone’s battery/software seems unreliable... oh well.

weedali wrote

QuicktimeKirk or other advisors who advice to charge overnight: please, be quiet and leave this conversation. you are not helping at all and only provoking aggressive behaviour.

This is a user-to-user forum. QuickTimeKirk is a user, just like you. And, unless he violates the terms of use of these forums, has just as much right to post here as you. If other people decide to become rude or aggressive toward him, that is their bad behavior, not his.

Apparently, it’s not just the 12’s. My iPhone 7 Plus also dies overnight even if I charge it to 100%. The battery health is 84% and the battery use show that nothing was working during night, so I guess it’s iOS.

KOSTDN wrote:

Apparently, it’s not just the 12’s. My iPhone 7 Plus also dies overnight even if I charge it to 100%. The battery health is 84% and the battery use show that nothing was working during night, so I guess it’s iOS.

Not even a close comparison. Your iPhone 7 is now a 5 year old phone and at 84% battery health, it's battery is very close to needing to be replaced.

It was produced in September of 2019, so it’s not even 2 years old phone. The battery can still ran for 5 hours of screen time. So the battery drain like that is not normal behaviour. Plus 84% is not that close to be needing a replacement. In my family there is an iPhone SE which battery health has been around 84-82% for the past two years and it’s battery performs fine. I guess that this drain issue is in iOS.

this is the problem. i have this problem on my iPhone 12 too.

Marshmall0 wrote:

By typing the truth your comment gets deleted, nice. Good job.

No, by disparaging users, you violated the terms of use of the forum. And that is how your post gets deleted by the Forum Hosts. Anger directed at another user will never be permitted in this forum. You certainly don't have to agree with other users. But you can't accuse them of things or call them names and expect your post to remain.

Hi mate, I left it last night with the charger plugged in. While plugged in drained to 43%. All it was were 3 alarms in the morning. Same exact case scenario as my old iphone 6, I mean old. And that one with alarms if plugged in overnight in the morening it had 100%.