iOS 13.5.1 battery drain

I’m also one of the iPhone and iPad users with that annoying battery drain issue. You can read my experiences earlier in this forum.

Yesterday evening I installed iOS 13.6 both on my iPad Pro 2017 and my iPhone Xs Max. Using the “buienalarm” app always gave me battery drain, because the background activity.

Immediately after the update, the background activity vanished.

I charged my iPad yesterday evening till 100%, charged the iPhone overnight till 100% at 8 am.

At 6 PM the iPad was still 100% (95 while writing and reading on this forum and checking my mails. Brightness 100% because I’m sitting in my garden in full sunlight).

The iPhone after a “normal” working day still 86% now.

I think I can talk about a battery improvement. Hopefully it doesn’t become worse again after a couple of days. Fingers crossed :-)

I went to 13.6 two days ago. Did the iCloud sign-on-in before. Mail used to be the problem, showing one third of the power consumption going to Mail with very few, 1-4 minutes of foreground activity. No background activity shown in the battery panel.

No improvement in 13.6.

Mail: 26% of the activity during the last 24 h and 1 minute foreground, no background activity.

I have done factory reset of my iPhone 7 and installed 13.6. Can you tell me the reason you mentioned to wait for two weeks?

My phone is still draining Battery. I wiped everything and then reinstalled manually.

This is a property of iOS.

The phone has to re-index the photos, spotlight, siri,...

Every iPhone I've ever owned always had to do this with a "big" software update (iOS 11 to 12, etc).

In my experience, when you do a complete factory restore, the phone does the same thing. It could take two weeks.

In the beginning with the iOS 13.5 problems, people here adviced to do this factory restore. The battery life of my Xs max became worser than ever. (Started the day at 8am, came home at 6pm, hardly used the phone and I had a battery of 20%)

After exactly 11 days it became better (the longest re-index time I've ever had, normally it's less than a week). Just the remaining background activity.

Now from 13.5.1 to 13.6 I didn't had to wait.

Took the phone from the charger Friday morning (installed the update Thursday evening), yesterday at 11PM back on charger with 26% battery left. I listened the whole Saturday evening to podcasts and did some reading.

This are battery statistics I never saw since iOS 12...

Hopefully it never changes again.

Have the same problem ever since IOS 13.5.1 upgrade and it hasn't been fixed with the IOS 13.6 upgrade 2 days ago..the battery is draining so fast - I don't use music on my Iphone, I really don't have that much apps on, I have Iphone 8 and when it's full 100% by the end of the day it will drain about 10-15% but ever since the update it just goes from 100% to like 63% in seconds and then it takes really long time to charge the battery again.

So strange and really annoying and doesn't feel safe if you have to go somewhereand the battery draines this quick!!!!!!

In this case, I can also join Peter...

An iPhone who's switched off, is off and don't use that energy.

But is he? You can check in the dark if the background illumination is also off. You never know the phone "hangs" and didn't shutdown... Normally in that case the background illumination stays on.

From my hometown another story...

My wife's IP8 still on 13.4.1 wasn't also very good in keeping his battery energy. It wasn't that extreme as with some members their 8 with 13.5.1 installed.

She installed 13.6 too. This afternoon she told me her battery lasts longer as with 13.4.1.

Offtopic:

On my AppleWatch the same story... Battery drain and sometimes the Watch didn't make a noise or didn't vibrate with messages.

Installed WatchOS 6.2.8, no solution.

Factory settings, installed everything again.

This happened at 3.30PM with 83% battery, now 79. So it seems to be solved now.

Try switching off your phone when it is at 30%. Then fully charge it to 100% and then switch on the phone to see if the battery drain reduces. Also check my post titled “Plausible battery drain issue fix for ios 13.5.1”. Please try it. Hope it helps. Since last 5 days I enjoyed like 9h from my phone with 68% of battery used on my iphone 11. Hope it helps!!

if it was mime I would first backup, then with a good wifi signal do Settings, General, Reset, Erase all content and settings. Then set it up again without restoring the backup yet. It will get a new copy of 13.6

Then see how it goes. If it still will not power off it needs repair unfortunately.

PS you can yell if it has powered off because you need a long press to start it up and you get the white Apple on boot up

I did what Peter and I discussed a few weeks ago. Factory reset/restore from iTunes and no restoration from my iCloud backup. That was on 13.5.1! Then 13.6 got released and my battery life improved even more. With my heavy usage I still last an entire day with quite some battery left in the phone. I charged my phone and took it to the hospital with me and my phone was connected ti the wifi during that 12 hour shift. I only lost 1% in 12 hours. Then I FaceTimed a friend and I slept with 93% battery. Woke up and did some more FaceTiming and iMessaging and now I am down to 78% after 3-4 hours of usage (on and off) whilst being consistently connected to the WiFi.

I suggest you guys do the same. Just my two cents. Sincere advice. Take it or leave it.

cheers!

Yes. You’re right. Apple support has taken all logs and diagnostics. I’m expecting a call back with some resolution by Friday. Let’s see what do they say. Thank you for your support.

I have by now tried everything almost. Almost all suggestions that I you all in community and from Apple team.

interesting feedback thanks.

Bottom line is there are many causes of drain and therefore many remedies.

It is not unusual for a problem app to be removed, the problem solved, then not return on re-install. iOS apps, unlike droid, associate data, settings and caches with the app, and on uninstall it is all cleared.

I know you are but there is no point ranting to Apple on here. They no listen.

You have the link to do that or go and tweet if you need stress release.

My 6S runs just fine on iOS13.6 which includes important security patches so I am already having a nice day thanks.

Let's talk each-other in about 1,5 year.

I will not read again what I wrote in 1,5 month in this topic... Maybe I already told this: In my experience, before I went to Apple I used 4 Samsung Galaxy S phones. After one year after release, they give software-updates to the next Android version. The phone mostly loses some features highlighted at the introduction (ex: Galaxy S6 was the first Galaxy with an uncluttered settings menu. Samsung was famous for his complicated settings menu till the S5. First big update: again complicated menu).

After the first big update, you get some so called "security" updates. Slightly the phone loses performance and slightly has an higher battery drain. After his 2nd firmware-update you get and keep battery drain. Some functions are going to behave weird. (Like my last 2 Samsungs, both S8, both had random GPS issues.)

Doing a factory restore and clear cache memory resolves this for a while, but issues comes back.

If you ask Samsung about an explanation: "But sir, this is an old phone at the end of his support, buy a new one, lots and lots of new features...."

What I told was the story with my S3, S6 and 2x my S8... All of them even not 2 years old!!!

Ok, Apple let us down 1,5 month with a bad software, but all the people here in Belgium I know who suffered this battery drain are already updated to 13.6. All that people do have their "old" battery life back from iOS12.

Maybe strange: I am the only one who had to do a DFU restore, but I don't care, after 10+ days, battery life was better. With 13.6 it is as good as with iOS12.

Samsung says after 1,5 year: throw your 1000+€ phone away and buy another one...

About battery life when the phone has powered down with the slider: nothing uses energy anymore.

When my Xs max suffered very high battery drain with 13.5 and BEFORE the DFU restore: everything was stable when I shutted down the phone completely.

If you do the DFU restore the right way nothing keeps in his memory. But "in use" you have to wait for max 14 days...

i feel you, i also have been thinking about switching to a google pixel phone, despite the fact that i really, really don't want to leave ios. these thoughts are painful, but a relatively new phone that just drains is also a no-go.

a bit of background - i have tried lots of things to fix the drain (restarting the usual way; airplane mode and wifi/cellular turned off; using 2.4ghz wifi instead of 5ghz; tethered update instead of OTA; recovery mode reset; DFU and set up as new with no backups, DFU and a new apple id in vanilla state; deleting mail and all accounts; deleting keychain db's - really, lots of things), but none fixed the drain for me except one time, when i deleted the mail app and the drain went away for 3 days. i don't remember if i also did the force restart back then.

today the force restart has fixed the drain for the second time in 2 years time.