iOS 13.5.1 battery drain

Same problem on my iPhone 7 Plus. Today, 3 hours after a full charge battery was at 44% so I did a hard reset (hold down volume down and screen lock until apple logo appears). That was 6 hours ago, then I fully charged phone (took over 3 hours) and now, over 2 hours after removing charging cable phone is cool to touch and still at 100%. I also could not swipe to answer call when phone was locked. Haven’t tested if that is now fixed as I haven’t had a call but I’m hopeful ☺️

you try this to test if a hardware issue drain battery energy

1- Close all application.

2- Reset and clean your RAM : Hold down the power button until the “slide to power off” option appears on the device’s display and next, release the power button, and then hold down the home button for roughly five seconds until you see an unlock screen to type your secret digit code.

3- Restart your iPhone.

4- Activate Airplane mode to disable all network activity (verify that all are really off : Wifi, Bluetooth, Cellular data...)

5- Activate Low Power mode.

Leave your phone in this situation for several hours (during the night for example) and verify. Normally without a hardware issue, you will have no drain of your battery.

the ideal is to try this after a clean restore of iOS (without restoring your backup).

I HAVE FIXED MY ISSUE:

I have a Iphone X with 13.5.1 - Battery Drain went in to overdrive stating Apple Music was using it all. Was easy to see from the setting under BATTERY which app was the culprit. I made sure music app was definitely closed. It didn't matter still drained. Tried lots of restarts, all apps off, I turned off Bluetooth, screen brightness as low as possible, turned off Mobile Data, Sync and background refresh. Had everything off that has previously been given up as a solution to this problem. . Still didn't matter. Apple Music still draining heavily. From full charge to 50% in under an hour from it just sitting on the bench not being used. There was nothing left to do. I DELETED the apple music app. OMG.. within the next hour battery drain was still as bad as ever. This time the main culprit was RECENTLY DELETED APPS. That is seriously outrageous!!! It was clearly the apple music app although deleted was still causing the issue. The simple fix for me was this. I restarted the iphone and then reloaded the apple music app. Guess What.. It's now perfect. No problems with battery drain now. I have to resync to get all my music back but it's a lot better than the dodgey battery problem.

Hi TexThomas, I haven’t read all the replies in this thread so somebody may have already come back with a fix. But I wanted to post this in case. Was helpful. I have been struggling with the same problem over t he last week. No exaggeration, my phone was getting so hot I couldn’t hold it. Draining all battery life in an hour or two. After trying Low power mode, disabling background app refresh with no change I read that the latest update can glitch apps that we’re open during software upgrade or apps that otherwise were not properly upgraded. It’s also worth noting I had very low storage left on my phone, about 1gb. So my fix which seems to be working so far with smoother performance and longer battery life (although not fully back to normal) is to go nuts deleting as many apps as possible to free up storage. By doing so I seem to have removed most apps that were putting a heavy background drain on my battery as shown by the battery section in settings (even with background app refresh disabled) . However the real culprit for me was the Apple Music app. Consuming more than 60% battery in the background. I deleted the app. Ran a couple of full battery empties and recharged and phone is definitely working better now. I’ve just reinstalled a few of the offending apps including music and my phone hasn’t gone supernova...yet! Hope this is helpful. Take care. Jon

Same here with 13.5.1. Mail. It is eating 49% of the battery in the last 24 h. What helps is force quitting Mail. Normally Mail will not complete the update of mailboxes and keep doing stuff, the busy wheel keeps turning, you can watch the battery going down and the phone will get warm. Force quitting and then restarting Mail will fix this and the mailboxes will update immediately.

It seems to be the Music app causing the problem. Try turning off the "Automatic Downloads" in the Music settings. And if you added any tunes to Music on a Mac and you are using iTunes Match, make a copy of the files and delete them from Music. This stops the downloading on the iPad. It's only a temporary fix until Apple sort if properly but it helped turn my iPad from an unresponsive battery eating brick back into a device I could use for News, Mail, Web.

I just saw they came out with 13.6 for iPad. You might check to see if that can help with you issue. Here is the link to the update notes. https://support.apple.com/en-us/HT201222

i hope this helps you.

I have been at 13.6 for a while as part of beta. I continued to see the problem.

Today, I signed out of iCloud, shut the phone down, restarted and signed back in. After 12 hours of moderate use I have lost about 40% of battery. That is a big improvement. I would have been fully discharged by now before the "iCloud fix". I will continue to monitor and update if there is a change.

I did the iCloud sign out - power down / up - iCloud sign in and it has improved battery drain significantly.

In 15 hours of normal use the battery is down to 30%. However the problem is still there to a lesser level. Five apps are currently showing battery usage for background refresh but it is switched off for those apps. Mail and Music are two of them. Previously I have seen it with other apps.

I have had all of these apps installed for years and have never had this issue before 13.5.1 with them.

I have an iPhone Xs.

Battery Recalibration

This technique is controversial but has been marked as a solution by more than one community member.

It is suitable when battery charge drops step-wise or dramatically has you described..

It may be that a new battery is required but worth a try

First backup the phone

How to back up your iPhone, iPad, and iPod touch

Then put on a video with full screen brightness and the auto lock set to never so that the battery runs down fully. Throw in the flashlight if you want.

When flat (turns off), leave it flat for one hour, no more, no less,

Apply the charger and in one session fully charge the phone and leave it on charge for at least 2 hours after it reaches 100%

Remove from charger and immediately force restart

https://support.apple.com/en-gb/guide/iphone/iph8903c3ee6/ios

The battery is now recalibrated. 

Any further dramatic stepwise loss should indicate a new battery is needed, particularly if large losses are experienced when the phone is powered off. 

General high usage (but steady) may indicate a rogue app or setting, in which case the next step would be to restore your device, and setup the device without restoring a backup, to see if the issue is replicated. I would first make sure you have a backup so your data is saved.

Here is a guide for those steps:

How to back up your iPhone, iPad, and iPod touch

Restore your iPhone, iPad, or iPod to factory settings

and see how it goes

If no improvement send it for repair or replace battery

If it works well restore from backup but be prepared to wipe again without restore from backup. 

https://support.apple.com/en-us/HT204184

Last try before I also think on hardware problems... Did you do a DFU restore? In that case, everything, but really everything is wiped away en replaced by the new software. By doing a "normal" factory restore the "bios" stays intact.

That's the way it solved my battery drain a bit under 13.5.1.

ok guys, i just got blown away. so i was still experiencing the massive drain but this morning i randomly decided to do "force restart" - quickly press volume up, volume down and then hold power button until apple logo appears (i have a xs). i did that at 9am and completely forgot about it until now (3pm) as i looked at the battery level and was like "hmm something is weird. why do i have so much charge left?" i had 67% left, whereas usually with the drain it would be around 30% or less already. I looked at the battery graph and the graph shows that i wasn't losing any charge when the phone was idle (it was draining before). i can't believe the fix is so simple. 😂 now the question remains - for how long will this stay this way.. and if the drain comes back, will this force restart fix it again.

try this out guys and post your results!

I had the same problem on my iPhone 11 and my iPad mini. Solved it (for now) by force closing every app and most important by turning off dark mode auto setting.

iOS 13.6 New Update is now available for download for Iphone 6s and onwards.

https://www.forbes.com/sites/marksparrow/2020/06/26/is-your-apple-iphone-running-hot-and-chewing-its-battery/#5e61ae1f1f42