After 12.0.1 update battery drain is high

I ended up taking my phone to the Apple store when it wouldn't hold a charge for more than 2 hrs and I was traveling, without ability to plug in constantly. I waited for 2 hrs as a walk-in for the "genius bar" service. After another hour the geniuses determined the battery needed to be replaced which I approved. While attempting to replace the battery during the following hour the geniuses ripped a cable and were thus apparently unable to replace the battery. Geniuses said I needed a new phone, it was now not fixable. Since I have a year old SE, which apparently they have stopped making, this store and hardly any others had it in stock. I had to go to a different store far away to get the new phone and transfer everything over from an iCloud backup that I had to create. Overall this experience took almost 2 days and 3 store visits in person to deal with. So that was a lot of lost work time, on a business trip, where I really needed my phone.

So, in summary the upgrade ruined my battery somehow that was not able to be explained, Apple repair then ruined the entire phone, I now have a new replacement phone that is given to me as an already obsolete device, but (knock on wood) for now at least, works fine with the new iOs 12.0.1. We'll see how long this one lasts.

My iphone 7 was running perfectly fine, would charge at night before going to bed, then would last all night and day before having to recharge the following evening, since the ios 12.0.1 update, the battery will go from the 90’s right down to 50 odd percent after only about 10-15 minutes of use, i am now having to recharge 3-4 times daily and then the charging process can take hours and my phone will heat up quite a bit too. This is absolutely shocking, Apple need to get their act together!!!!

My phone is up to date (12.0.1). The battery drains so quickly. On top of that it would charge to about 5% then drop to 1%. I would let it charge with the screen off for 20 minutes and it couldn’t reach 10%!

I think, today everybody knows, that there is a bug in iOS 12.0.1. I have of course the same problem as a lot of people (may be all users with older iPhones than 8 or X). I have iPhone 6S.

The question is, if apple did it purposely, or it is really a bug. In this last update, they fix some problems with battery recharging of the latest iPhones, as I have read. It's possible, they fix the "long battery life at older models" at the same time 😀

When I was iOS 12, my battery holds for 2 days (I am not at facebook all the day, ok?).

As I upgrade to 12.0.1, my battery holds for less than 1 day! I bought the new battery, and it holds for one day (from 8 AM to 11 PM).

My wife has iPhone6 (not S) and she has iOS 12, her batt holds longer than my new batt!

What's wrong with apple?

I am planning to buy the new XR model. But, I will wait, until this issue will be solved.

If it doesn't, I completely leave iPhone and go to Xiaomi, or another better and cheaper choice...

Same issue with battery since the iOS 12.0.1 upgrade. Chatted to apple support, who suggested a complete reset of my iPhone 6s Plus and reinstalling the backup through iTunes...... still the same issue. No fix in the iOS 12.1 update either. Sort this apple! Not happy

It is definitely a software performance issue that’s degrading the hardware performance. Apple please look into this issue as it would not reap good fruits for you in terms of losing good amount of customers.

I am planning to buy iPhone XR, but after this issue, I will wait until this will be fixed in the next update 12.1.1. If it will not, I purchase Xiaomi, Samsung or Motorola and definitely leave apple...

I started having this rapid battery drain issue on my iPhone X for a few days now.

Spend over 30mins with Chat Support without issue being resolved and now have appointment with Genius Bar for next Saturday.

No idea whether it is related to software or hardware....very disappointing!

Same here, 6s. Battery was replaced less than a year ago under the replacement offer they had due to the throttling issue. Not just drain, but if I am watching a video while it is plugged in, it won't charge at all, i.e. the draw on the battery is equal to or more than the charge. That's never happened before. Pretty annoying.

Same issue here. Since updating to 12.1 (iPad Air2, so yes, it’s older than many devices mentioned on this thread), I’m having a sudden and dramatic battery drain.

I followed settings advice elsewhere after the update and allowed several days for systems and updates to finish. I’ve done several resets and was on the verge of trying a reinstall but searched some more and found this thread.

I timed it tonight: it took 43 minutes to drain from 100% down to 35%.

My iPhone XR issue with severe battery drain and Face ID not working probably related to some component part becoming faulty. Problem didn’t resolve with restore etc. Had to return and get new device. Luckily new iPhone XR working perfectly.

Same issue with me after update my iphone 6 to ios 12.1.1 battery drain very fast...after installation new battery issue is same...i charge my phone 100% at night and switch on flightmode then morning 7am battery on 70 to 80% infact all setting backgroung apps refresh locations closed but still battery draining on standby..PLEASE FIX IT APPLE WITH NEW VERSION OF IOS

APPLE totally failed to resolved battery issue every ios new version damage battery life....i installed new battery in my iphone 6 but still same battery drain issues on standby :( infact all the setting app fresh and location also closed but battery still problem

I use Iphone 6 and the battery says ; Supporting normal peak performance.. but the battery dies in 6-7 hours without any mobile data use while sleeping during the night.

IOS 12.1.1 also has the same issue.

In my humble opinion Apple knows full well what their update will do. This is to get you to scrap your old phone and buy a new one. I'm having the same issue, this is the second time they have pulled this trick on end users.