iPhone 12 battery draining fast

And to me, this graph shows virtually no abnormal behavior. There are flat plateaus which show that percentages are stable and not constantly dropping at an alarming rate, like on other devices or on previous versions. In this case, a little tweaking of some settings can improve battery life some more (those generic battery tips from YouTube etc. might save you a couple percentages and tweaking location service settings a bit etc), but other than that, this seems totally okay. You might be able to decrease the drain from the 6% it drains now to maybe 3% while the device is idling at night by turning off a couple things and by tweaking some settings like I mentioned.

Sorry, but "tweaking" and turning off this off "things" on my expensive phone just to get the normal behaviour that it should get, it not really ok. I never had this experience with no other iPhone model since i get my first 4S.

Tweaking is not the solution, the solution is to Apple acknowledge the problem.

I have never experienced draining battery so huge as it. I had iPhone 5, iPhone SE 2016 and after 3 years SE’s battery wasn’t bad like that. Cellular data haven’t been a problem in any of my phones and I don’t accept draining like this. I’d give back this phone if I could and buy another.

There is a problem if I don’t want to. I may as well have kept a 2 year old iPhone if I wanted this kinda battery life. This phone should not drain all the way down to almost off on in a little over 12 hours of mostly idling.

Trying to understand how the short battery life is not considered in fundamental principles of a mobile phone decent functionality, but defeats the purpose of a mobile phone when it needs to be plugged in to work! Battery life drains just staring at it! Wait restore from new.... after 4 times, I give up! Fundamentally, worst iPhone ever!

According to Apple’s diagnostic which just visualises your usage but does not actually benchmark it to any type staple, they say it is pretty much the users fault! Way to go Apple, use a visual information tool to tell you the obvious information that your phone is draining! Great value add!

I can only form my opinion based on the information that is provided through your one screenshot. No one but you knows how your phone is set up, what apps you have installed, what you do on it, where you keep it at night, where you are during the day/afternoon/evening (when the drain Is obviously less).

Are you switching between SIM cards?

No, I don’t. I’m on EE for more than a month now, and that screenshot comes from using the same SIM card in the same room. I thought O2 would drain less because of better signal strength but it’s the other way around unfortunately. EE works fine 95% of the time with some occasional drain spikes which I’m trying to investigate.

Low Data Mode is not really suited for everyday use. It amongst other things prevents the phone from receiving texts/iMessages or a least doesn't notify you when one is being delivered and you have to manually go check. Which is not viable to 99% of people.

Even though not specifically mentioned, it does. At least it did for me. Maybe it could have been recently changed in 14.4 or something, but I did not get notified about messages in apples own native messaging app. Or maybe it is just iMessages and regular sms via cellular do get a notification. (and it is not because of the notification bug in iOS 14, because I got the notifications every other time when LDM was disabled.)

I contribute this to the following statement as listed in the article.

• Apps might stop using network data when you're not actively using them.

And it could hurt the user experience depending on what the user does and needs/wants. I've read someplace that this mode is not recommended to be turned on all the time, unless you really need to save data or something similar, and I have to agree.

But we shouldn't talk about this topic here, because users will point out that this is a thread for battery drain discussions and nothing much of anything else

I’m having the same issue - it’s 6pm, not done much on my iPhone 12 Pro - and I’m at 20%. In all the previous iPhones I’ve had - I’ve NEVER seen the red battery bar at 6pm.

I feel something is wrong. I know I’m not using the phone any more then usual. But it’s like this every night.

User0197 - Thanks for replying! It will charge to 100%, just drains like running water the past weeks. I updated to 14.4 late, waiting on bugs to get fixed. I've not heard that about it waiting for my usual usage time to fully charge. Odd! I'll check my settings. It always charged pretty quickly to 100%. Another idea I'm trying tonight is putting it back on a lightening charger rather than the Magsafe, as I've seen it disconnect from Magsafe charging a few times. I also force restarted it earlier tonight and then set airplane mode to shut off WiFi. Wasn't sure about turning off 5G. Too many are having this problem now with the 12s. Anyway, I appreciate your help.

I just checked those - system customization was Off so it's on now. But I haven't changed that since I got my 12Pro months ago. It charged to 100% using lightening cable. I'll see how it does next few days. You are a wealth of information! Thx!

Ridiculous, I rarely use my phone yet it’s battery always needs to be charged. Have these batteries been recalled? I should be able to go two or three days without a charge instead of every eighteen hours. I am tired of being caught running errands with a dead phone.

Did you go through all the previous versions? 14.2, 14.2.1, 14.3? or did you skip any?

Does it show up in the battery graph as running in the background? As far as I know, those apps (if they are actually apps on the home screen or a settings panel, they would show up in the app usage list. Shazam (if its only the toggle in CC for example) would not, I guess.

Ahh mate :( Most folks here been saying and hoping for this to get fixed ever since 14.3 three months ago