Battery drain after updating to iOS 13.3.1

What does indexing it’s resources mean?

Anyway, this unexpected battery drain has been going on for more than a few days and correlates with using the GPU for scrolling in various applications and possibly use of the the 4G data radio. I read Lirum Device Info Lite in the background and it was not showing a lot of CPU activity, maybe 25%. It is apparently something other than the CPU activity reported by iOS that is causing the trouble.

If the iPhone 6S with 95% battery health sits on a table unused, the battery will go down maybe 5% in 8 hours, which is normal. Pick up the phone and scroll up and down in the Apple Settings application for two minutes, the battery level being displayed may drop 20%. As mentioned elsewhere, I allowed the battery level reported go to 11%, then started the YouTube app playing, and it played video at 50% screen brightness for over an hour before the phone shut off. Nothing like this ever happened until the 13.3.1 update.

Thanks for the clarification. However, the problems began right after the latest update, so I’m sure that the newest update had had smth to do with my battery failing to support me nearly throughout day (which was the case just before the update).

You are right about the stated span of a battery, but to be dropped for almost 50% per regular usage, well, then it has smth to do with the update as well.

Same at my side. My battery is dropping down, literally 50% faster than it did before the update. I’m charging it twice a day since the update. The battery health is 81% for some time already, so the usage before and after this update is harshly different. Impossible to be just a battery life is done. Smth to do with the update too!

this is my fifth apple mopile .. and iam the one who sell these phones in here "egypt" and this is the first time i see the back screen has scratches .. so many of it .. and i can't understand what happend to my phone .. i need it to be fixed so soon because i buyed it so near and i change my phone once a year .. so pleaaase iam begging you to look to my proplem so near because it drove me mad !!

I’ve tried several restarts and phone still drains fast. 93 to 44 percent in less than 15 minutes.

I get real tired of updates that cause more issues than they resolve and take time to repair or answers like take it to a technician.

Have a real issue with incapable engineers who can’t blow there nose and are turning out defective updates. Really with they could do there job!!!

We should stop buying Apple products as I see that Apple has been fined for deliberately slowing down devices “hidden” in updates. After updating to 13.3.1 my iPhone’s battery performance has drastically reduced. This is totally unacceptable!!!

I am planning to make an appointment with an Apple Store to see if they can downgrade my iOS. I am lucky enough to live only a few miles from an official Apple store. I know I could do it myself: install iTunes on a PC, then download gigabytes of the install file for an older iOS version, put the phone in recovery mode, load the older iOS, then restore my data. That’s a lot of tinkering and a lot of steps where making an error is possible, so I’d rather get assistance from a, “Genius,” at the store. Either way it is going to be inconvenient.

Something is strange about the battery drain. If the battery were really being drained from 95% to 75% in two minutes which I observed on my iPhone 6S, the phone should be very hot from that much energy being dissipated that fast. The phone is not getting hot, so I believe what we are seeing may be a calculation error. None the less, the phone shuts down sooner than it should because the battery either is, or appears to be, empty. The end result is the same either way.

Hi! So there’s no an official Apple store in Graz, just a reseller - McShark, and they are charging €40 to run the diagnostics, which is absurd. I’ve called Apple in Wien and as I expected, the diagnostics are run for free. So I’m gonna wait till my next trip to Vienna. Sorry!

Thank you for the reply - saved me a trip. The Apple Store is always a mob scene, and I was not looking forward to the visit. The staff requires us to work at those wood tables where the adjacent conversations are make it difficult to hear and concentrate on one’s own issue.

It seems like the Apple Store policy should be a little more flexible than only recovering the absolute newest iOS to a device. There are inevitable software compatibility issues that occasionally require a customer to temporarily remain on a specific iOS version.

impulse_telecom wrote:

There are inevitable software compatibility issues that occasionally require a customer to temporarily remain on a specific iOS version.

Apple expects the user to determine whether or not they should update. Plenty of people certainly disagree with this way of doing things.

I sure they will have another update soon to repair this like some of their earlier updates that caused similar problems.

My issue is I was forced into an IPhone because of medical implants that it controls to adjust and change.

These updates and there issues cause concern about my ability to control my need to use it.

My SE, with Apple-replaced battery currently at 98% health, drains the battery so fast that has to be recharged many times a day.

For whatever reason, Mail notifications seem to be the culprit. Mail battery usage: 47%, with 6' on screen and 2' background. Second app is Messages with 14% and 10' on screen.

I didn't change any setting myself, and before I could easily find the phone at 75% battery in the evening, with no charging during the day. Now I need a power bank for the phone to survive... :-(

Mine is doing the same; I updated 2 nights ago; and every since, My battery life has plummeted. I used to charge it at night, and it would last all day and still have about 25 percent at night when I put it on the charger. Since the update, I’ve been having to charge it 2 or 3 times a day.

Update: the battery drain problem does not seem to affect newer iPhones. I have an iPhone X that does not seem to be affected by the rapid battery drain issue.

I can’t get more than about three hours use out of my iPhone 6S even though the battery is at 95% health. If I do anything at all other than carry it in my pocket, the 6S battery will be empty in less than 10 minutes.

Correction to my previous posting: The iPhone 6S does get very hot when the battery drops sharply. On my previous test, the battery was already fairly low and I could not use the phone long. This time I started with a fully charged battery and after a few minutes the phone got very hot this time.

it is a little worrisome that whatever the 13.3.1 update is doing might permanently damage the phone’s hardware with the heat or even damage whatever the phone is on or in ... like my pocket!

Forgot to mention: I downloaded the 13.3 ipsw image to iTunes, did a hard reset on the iPhone 6S and total reinstall. It was no help at all. After the recovery was complete the battery drains just as fast, maybe even faster now. I wanted to stick with 13.3, but the initial setup dialog forces an update to 13.3.1. Perhaps my lack of experience is showing, but I couldn’t figure out a way to skip the forced update, so the exercise of reloading the iOS was moot.