iOS 13.5.1 battery drain

I'm not sure why you're suggesting this was some aggressive response--I'm a systems engineer and was simply curious about your reference to OTAs potentailly being the issue. Technically speaking, the binary being downloaded is checksumed and once downloaded, it is verified before the setup executes. I have been using Macs and "I" devices for many years and almost never use a tether as OTAs have been pretty solid, albeit a retry required here and there when network connectivity is bad. Anyway, have a nice day.

Mikey Watson wrote:

You are not helping on this thread at all. Mine is great... well good for you...

The fact that there are not huge numbers of people (just about the same number as we see after every single new version of iOS comes out), indicates that it's not an iOS problem. There is something wrong with your hardware or the configuration of your individual phone. I understand that troubleshooting such a problem is difficult and so it would be nice to believe that a system software update would resolve the problem, that's not usually what happens.

"I think you are right! Also, ‘if you’ve got a problem, buy a new one’ !!!!!!"

Yes, that's what I usually do with each minor iOS upgrade, but unfortunately this week I had to buy a new TV. I will postpone buying a new one till next week, as it is _clearly_ a hardware issue on all of my iDevices :)

I'm not even sure it has to do with background activity and might be the OS doing something under the hood that's keeping the darn things active and draining.

I have an older iPhone 6s that I've turned into a makeshift iPod. Literally nothing is on there except stock apps that I can't delete, I've turned off ALL background services, and, I keep it in airplane mode as I use wired headphones. Location services off, background app refresh off, live wallpapers off -- it's literally just a dumb media player that could connect to WiFi and surf in a pinch and take photos. Even with my battery health being 86%, I was usually able to get several days of standby and light media playback usage out of it before getting down to 15% or less. After 13.5.1, it drains by half its battery in standby overnight!

They can't blame app re-indexing in my case. I'm going to invest in a new battery just because I feel like it and like having the device as a stand alone media player. I'm taking it into the Apple Store tomorrow for battery replacement service but I don't expect miracles; the battery drain issue is clearly a core iOS flaw that needs to be fixed.

You are spot on. It is troubleshooting 101. What has changed? IOS. I would point at certain apps (in absence of your posting) if they had not been upgraded to take advantage of major changes, but this release was mainly for preventing jailbreaks and clearly something else was tweaked in the process. And this is being publicized all over the web starting with CNET, so I'm sure it will get resolved. Cheers.

After one week my battery consumption has become stable. BUT after every use, I have to force shutdown the apps which keeps draining the battery.

That seems to be “the remaining bug”.

If you don’t use any app with that behaviour, there’s indeed no problem at all. At least for your kind of using.

I am using iPhone SE first generation, I also suffer battery drain after upgrading to 13.5.1. Before upgrade, there was no battery drain problem on 13.4.1. I found that it happens in After midnight time Even I have enable reduce battery mode. It dropped dramatically. Please really check the reason and FIx ASAP. It really Affects too many people.

Im in the same boat - upgraded my iPhone7 for a first attempt before I do our newer iPhones and I've lost cellular network (just searches all the time) runs very very hot and discharges at a rapid rate - Im sure its doing some damage when it gets that hot. I think we need Apple to help us with an easy way to go back IOS versions so we can get out of the trouble were in while they fix the BUGS please!

Same exact thing. Using an iphone xs and iPad Air 2. Never any issues with battery/charging etc. They would last all day or more before. Upgraded to 13.5 and 13.5.1 and battery won't stay chjarged. Spent 6 hours doing a reset. And then restore. Made no difference. Battery activity was showing 45% being used by Siri, which had been disabled. I went through EVERY app under Siri and toggled it off. Again. (This took a ridiculous long time and was probably unnecessary but, at this point, who knows?) Also was showing Mail using background at 22%. After reset I charged it to 100%. Shut off all apps. Set it down. Screen off etc. Went to sleep. Woke up 5 hours later. Battery at 25%. Called Apple. Told them and sent them screenshots. They said an engineer will get back to me.

Did you monitor usage after the reset and before restoring?

That would have been key to the exercise.

After the restore did you try the effect of changing push mail to fetch and vice versa?

Reset using Settings takes 10 minutes using Erase All content and Settings

Set up agsin maybe 15 more

Restore from Mac maybe 30

What took six hours?

Monitored it for a bit.

Then restored from backup. Which took a long time.

Did not think to change any mail settings. How would the common average lay person know to do that? Apple support on phone didn't mention it. I think changing settings is good for the people doing research and maybe other users on this message board...But it does little fix the problem in the short term. It can help kick the can down the road and see if you can use some other app as a work around until it's "fixed." I get that. But, I mean if you're using your phone as you normally would with the apps that are essential to your work and lifestyle and it's all hunky dory. And then you update and it's suddenly "broken" and then you disable all the apps you actually need to get it to work again. Then it's not really "working" is it? :)

I did a full reset of my device without restoring from backup and the problem persists. Battery drains 40% overnight on an iPad Air 3. Prior to 13.5 my iPad could be on standby close to a week. Now 24 hours and the battery is drained. This is not about some setting or app that- this is about a bug introduced in 13.5 that is causing major battery drain issues when a device is on standby.

Please stop hijacking the forum thread by telling us to turn this setting off or uninstall that app.

"...Please stop hijacking the forum thread by telling us to turn this setting off or uninstall that app. .."

What would you suggest?

PS you have a strange grasp of the meaning of Hijacking. Giving advice well intended is not hijacking just because you do not accept it. My advice is the only advice anyone has given on the subject. The alternative is wait for 13.5.x

Hi Gert, yes it is complex, and the main problem is the battery app only shows minutes of use and not power used

Your buienradar app running at 18:00 to 19:00 has 100% background usage (light blue), all 60 minutes, yet hardly used any power compared to the app running for 25 minutes in the foreground with only 10 minutes background.

The reason my Barometer had to go is that I cannot see any justification for such an app to be running constantly off screen so I suspect foul play.

The battery usage graph is a guide to look for culprits but all apps use a different amount of wattage based on CPU burn.

Even more frustrating not all processes appear as apps on the graph. It is just as likely to be settings or network traffic as it is apps. Hence the ultimate approach of clearing the whole thing down as new then building up again. I do that every six months for maintenance.

Or wait for a fix if one exists.

Just updated my iPhone XR to 13.5.1 last night and it ran super hot in standby mode all day today even after an additional reboot and the battery was almost dead in a matter of hours even with no apps open and limited usage. I can’t make heads or tails of the battery analysis under settings but it says the photos app was open for 1 minute in the background but used 26% battery! I hope this is addressed soon before it possibly causes damage.