iPhone 7 Plus with iOS 13.4 battery drain problem

Further, Here is my XS Max. Haven't used it much at all the entire day -- in fact it was on it's wireless charger overnight and most of the day. Notice how even the Settings app shows a very quick discharge here -- I've never seen such a steep slope like that until 13.4.1 and also it states that the screen was off for 0 minutes during the 24 hours. Either that's an issue with the way the Settings app is measuring the battery or something is majorly wrong with the system idle process with would make a lot of sense at to why my battery is draining by about 30% in 2-3 hours of little to no use.

Phone would make it through an entire day with usually 20-30% battery left by the time I went to sleep. Phone is now at 40% battery within 3-4 hours of me WAKING UP.

Whilst this issue is affecting 10's of thousands, 100's of thousands, millions of Apple devices worldwide, some of them can be fixed by restoring, deleting an app, changing a setting etc.

I myself managed to get my phone back to normal for 24 hours about a week ago but then it just went nuts again.

I can accept that some phones need to re-index after an update but 2-7 days doesn't make sense given the processing power of these phones.

As far as Apple first line tech support goes they are reading from a script & its only very occasionally that you get through to someone who actually knows what they are doing.

Normally I persevere with first line for a bit then ask to be put through to second line, specialist.

Yes the iOS is a dismal piece of programming but it's becoming apparent that the high cpu/battery drain has many many different causes & cures.

Just upgraded to 13.5 beta 3 & battery drain worse than beta 2 but of course it could just be re-indexing & all will be fine in 2 days, OR NOT

There has been a major miracle.

I noticed my phone was cold after being in charge all night and sure enough at the end of the day I still had about 40% battery left.

I didn’t change anything but left on charge again overnight and it was still ok so turned app refresh, Siri etc back on and still ok.

this happened about 4 days after upgrading to 13.5 beta 3 and initially battery drain was horrific.

hopefully I’ve got my phone back after a year plus.

I hope the final release of 13.5 takes so long because apart from the security risk Apple is also working on fixing the batter bug. Both my 11pro and my iPad Pro are useless paperweights at the moment.

Once you start looking into this the net is full of consumer reports about the battery bug. Only Apple support want to tell you that you’re the first person ever to report this. And then they give you all the crap about resetting and other completely useless things.

All my Apple devices were absolutely fine until the iOS 13 update.

You know my 8 is still draining pretty quickly too but my XS Max is better than 13.4.1. My battery health is at 95% on the 8 and 97% on the XS Max, but if it’s just on standby the battery is ok in both. Just the screen on time is not good as previous iOS versions. I think maybe display drivers got messed up on 8 because it looks like lower resolution now to me but I could be wrong, and also it charges slower now. Not sure what’s going on, only that updates are killing my $800+ phone. Apple...what’s wrong with iOS13?

My Original Se was eventually sorted after over a year of being useless witness the upgrade to 13.5 beta 3 and even then it took 4 days before it settled down to being a phone again. Right now I’ve got 64% after about 9 hours. No way am I upgrading to 13.5 full until I know it’s working properly which it isn’t yet.

Fact: I have an XS Max with battery drain since 13.4.1. DFU mode restore to clean 13.4.1 ipsw did nothing.

Fact: 13.5 update did not fix this for me.

Fact: I have uninstalled (and reinstalled) apps that appeared to be taking up more battery to no avail.

Fact: I have disabled Bluetooth for a day and saw no change.

Fact: I have disabled Siri (and Hey Siri) for a day and saw no change.

Final fact: I intend to take this into Apple and request a battery replacement. If refused... I will be a very unhappy customer :)

[Edited by Moderator]

13.5.1 didn’t solve the issue for me. Strangely enough, a fully charged phone now lasts till early evening without too much use, but a 60% charged phone at 11pm is dead flat and off at 6am. Each morning. I’ve had every iPhone from the first one. And this is the biggest bug for me ever!

You have a good point. And BTW, shot down complitely should run it indefinitely. Until you start, and maybe by then we will have iOS 20.5.5, which solves the battery issue. That is also a joke. But I heard that iOS 14 beta, does not solve the battery issue.

Another solution is buying an external battery-protective case. I used to use for iPhone 7s, because the battery was not that great. And I was very happy getting iPhone 11, because it had a great battery and I did not need the external power. Apperently the software update affected the battery performance.

Thank you everyone for these ongoing reports. I have an iPad Pro circa 2017 - until last fall's iOS update I had 20 hours on a battery. I worked with a dozen or so Apple Senior Advisors, and did two full complete resets during which I wiped my iPad clean and did new installs. My battery time dropped to 4 hours on a charge.

I try to close every app after using it and that has brought my battery life back to 6-8 hours on a charge but it took six months and hours on the phone to get to this point.

For people with iPad Pros whose devices are operating at full battery capacity I wonder what you are doing that I'm not? Because my battery life went down the tubes after the iOS 12 update. Functionality also went south.

As said already in one of my replies, my diagnostics is that, sometimes, an update goes wrong (I don’t know why) and that brings up the battery drain behavior. Hopefully, this disappears with a subsequent OS update (any of them). In my case, it took two or three of them, meaning I experienced more than a month of “unusability” in which my battery health went from 94% to 88%.

Put it on a charger more often.

[Edited by Moderator]