battery drain iphone 6s 13.1.2

I have a 6S and until the newest update it was working fine. My battery health is at 89% but the past few days I can literally see my battery percentage going down. I’m not doing anything differently. Last night My phone was at 49% and when I woke up today it was at 1%. I turn off WiFi last night to see if that was the issue and still it drained. I uninstalled Instagram thinking it was the issue but so far no change in battery life. I’m very upset! Apple needs to fix this!

Like most people, I have tried all the tips I could find, now on13.3 but discharging to zero in less than 12 hours showing 16 minutes use, and that was checking settings and battery during power on. Prior, I had up to 36 hours on standby, (no calls or activity except normal).

To me, it is obvious. Previous to 13, no problems and happy. Since firmware update, appalling battery life, which points to either a firmware bug, or an update corruption, either way, a perfectly good phone has been reduced to a "needs changing" stage. One thing for sure, I have only been using an iPhone for a few years, and any replacement will not be with a company that does this and then persists its the battery, I am more than annoyed. Things do happen, (I worked in computers all my life), and can say that in my opinion, if the battery is now trashed, it was the update that caused the damage, but more like the battery control firmware is bugged. Apple need to accept responsibility and either fix the firmware or offer a heavily discounted battery replacement if that has been damaged.

Thanks for the suggestion HailWisk. How many hours of 'screen on' and 'screen off' time are you getting now on average per 100% battery usage? Looking at my battery stats I'm averaging a combined screen on/off total of 3 hrs per 100% battery. Also, just to confirm you placed the phone in 'recovery mode' and not 'DFU mode'?

@Bailh I used recovery mode, not DFU, (down volume and sleep kept on while connected to Itunes), I have never done this before so at your own risk 8-)

I admit I was impressed, it went through the whole thing itself, eventually gave a welcome to your new phone, and did I want to restore data or set up manually, (something like that, it was very late). I chose restore from backup, and it showed the last one a few days ago, and off it went again.

I had also yesterday bought a case battery in desperation which when the button is pressed, charges the Iphone to full then disconnects until the button is pressed again. It was left connected at 64% last night and this morning at 8 it was 96%. I figure it stopped charging around 2 in the morning, and if correct, it meant 6 hours standby for 4% battery. (I live in the UK by the way so time of post is out).

All guesswork, but if correct, this is a big improvement on what I was getting of 45% or so overnight, but the day will tell.

I will post again when I am sure, but thanks again to Hailwisk, it has given me hope, which is more than Apple has.

It is still early days, but my Iphone 7 is still going and is at 52%, and would have needed charging by now compared to the days after updating to 13.3.

Allowing for the fact that following the restore there will have been more activity as the IOS carries out housekeeping, it is at least 50% better than it was but still down on before updating. Another good point is that my battery health was 88%, (normally charge properly and cooled), and it immediately fell to 78% following the update, but since the restore, it is now at 82%.

I feel this supports a comment I made elsewhere that the updating process somehow corrupts the battery management and monitoring routines at least. Perhaps the verification that takes place during and after the updating perhaps needs "looking at", as the restore that takes place using Itunes as suggested by Hailwisk should I would think be no different to any other update, but there is clearly some difference.

Are y'all using the new iPhone interface on Catalina (whatever it is, I'm still on Mojave), or iTunes on an earlier version of Mac OS? Could that plausibly make a difference in our relative success at resolving with the above process?

@jdbaka

I used ITunes 12.10.3.1 on Windows 10.

Based on just about 2 days after the reinstall of 13.3.3, I figure I have improved my standby time, based on 100% down to 10% from less than 12 hours after the update 13.3.3, up to about 24 hours. No calls, just looking at it from time to time.

It was around 36 hours prior to the update, so not as good as it was, but improved a lot. As previously mentioned, my battery health had gone down overnight from 88% to 78% after the update, but since the reinstall, is now at 82%.

I think it does prove something goes wrong with some people updating, as a reinstall has helped me. Just wish I could get back to how it was, might do another, but seems a bit of a lottery, and it could go up or down.

Sadly, seems nothing changed on my 6s for now. I tried both recovery mode and DFU mode: in one night of airplane mode, it dropped from 100% to 91%. It's a clean iOS 13.3 with nothing installed, only iCloud account.

I was fortunate to get some noticeable improvement, but still not near what it was. It has been a few months since i had single figures overnight!

I was reading another thread where someone posted here with an awful battery life on a IPhone 7 after the update, but she then posted again 8 days later to say it cured itself. She posted pictures from before and after. I started to read other forums, and in one, it was standard practice after an update to do it using the clean restore method, so I have done all the battery saving tips and leaving it a while. I must say that before I had not done any real battery savings mainly because my phone is on standby most of the time, and battery life was simply no problem, then suddenly less than 12 hours between charges doing nothing with it, and as a retired electronics and computer engineer, I look after it and it is charged with care. To be honest I am not impressed with all this, the phone was taken for granted which is how it should be in my opinion!

Good post @jdbaka :-)

I have a battery case for my 6s but this morning, having not charged my phone overnight it opened up at 15% dropping fairly soon to 1% where it stayed for some time.

I have fired up the battery case to start charging and within 4 or 5 minutes, the phone is reading 33% ( ie. it is ‘charging up’ rapidly.

I believe that there’s a fault in the battery percentage gauge’s reading, and not in the true state of battery charge.

Yes, I have noticed the staying at 1% for a long time. I posted a bit a bit further up, but what I did this morning was turn off the IOS battery optimized charging, and I have just looked and the drain graph is looking really good to what it has been, I will not allow myself to get excited. Since I turned it off it is falling at about 2% per hour over 5 hours, and is nowhere near as steep as yesterday. May be it's simply settling down, anyway I will report back if it continues like this.

Hope seems to be lost. Unplugged my phone at 100% this morning. Powered down and did not turn on for 3.5 hours. Was at 88% and within 30 seconds of just starring at the screen was 79%

Oddly, the last few days, I'll recharge in the afternoon and then it works fine for the rest of the day. But after unplugging in the morning I experience (apparent) rapid drain. I also use the phone more that second leg. Music on wireless headphones, while in the morning, the phone is mostly in my pocket in standby (or off).

Mine, an IPhone 7, was improved having done an Itune restore, then what seemed like another jump when I turned of the optimized charging, but it slowed the discharge just for a few hours, and stopped logging the discharge and charge altogether.

I have now done a DFU restore as a new phone, and have not restored data, setting the basics up manually.

I am fully charging it now, and will see if it is really like a new phone !!!

It would help I think if Apple admitted a problem and were working on it, the internet is full of this problem, it seems its thought we have caused the problem. I can do the data restore later, so cannot blame apps I had installed.

Something new I am noticing (6s).

The battery meter shows 100% or something close. As I have experienced challenges in phone shutting down unexpectedly during a phone call, I plug the phone into the charger and the device goes into a restart. When ready to go again, the batter level is in the teens or less... This has now happened several times in the past 3-4 days.

The may lend more credence that there is a problem with the device understanding the true level of the batter charge and that is the real problem.

I’m pretty sure that it is the percentage reading that is the problem with my 6s.

It shot down to 9% then stayed there for a long time until I decided to re-charge it, which it did quite quickly.

It is a nuisance though as you don’t know how much battery charge there is left when it’s showing a reading in the single digits