IOS update 12.3.1 now Battery draining

I am still resisting wiping my phone and still experience ultra fast battery drain in iOS 12.3.1. I have some observations that might be of interest. Along with turning off all background refresh on apps, I have been turning off as many settings as possible and experimenting with others:

• Mail—I disabled push and switched to manual fetch. If Mail is “open” in the background and even with all settings to fetch or push off-battery drain is amazingly fast. Hard closing it on my iPhone X stops the drain. So, don’t use mail unless attached to power?
• Safari-more or less same as mail. Use only when attached to power and keep totally closed when using battery and battery function returns to “normal”
• Spotlight Search-this function has been whacked for me since installing iOS 12.3.1. I have had to resort to using the App Store to open apps. It does not show as draining the battery but I can’t be sure it is not. When swiping down on the screen to use Spotlight, sometimes there is a several second delay and often the icon for the app being searched displays for a flash and then the screen goes blank. Sometimes, Spotlight just churns and does nothing. These two behaviors are strange and I wonder if they are not also part of the perhaps larger problem
• I have removed all apps that needed IOS updates. I removed Facebook as someone suggested since I don’t use it and figured “why not”.

There is something causing conflicts in the iOS-or, a combination of things that are resulting in this super fast battery drain happening in certain phones and not in others.

I seem to have solved my iPad Air2 battery drain.

If it helps - I completely drained my battery, then plugged it in. When it started back up, I switched it off with the slider.

I let it charge completely over night.

I am on 98% now after three days with no use.

Previously my battery drained completely in a matter of a few hours from 100%, with no use at all.

IamH4V0C wrote:

Wondering if an app is not compatible with 12.3.1 and attempting to connect to (?data source on internet) and failing over an over.

There is a simple way to test that. Back up your phone then restore it to factory settings. Test for a couple of days. If the battery life is better, the problem is something you have loaded onto the phone.

This thread is about updating to 12.3.1. Is that what you updated to? Have you updated to 12.4? When you checked the battery settings what app/process did it show that used most of your battery overnight?

1. I have read the whole thread. And lots of similar threads going back to iPhoneOS (before they changed the name). Have you?
2. Then whatever is causing your battery drain is something Apple doesn't know about.
3. Then it is time to keep looking.
4. So if your battery is actually failing replacing is not a solution? How about when it starts swelling and pushes your screen out? Is it a solution at that time?

And the diagnostic method of running the iPhone bare for 48 - 72 hours lets the phone do all the spotlight indexing, back ups, etc. to see if the battery use stabilizes. If it doesn't then something is wrong with the iPhone and further testing is needed and you have ruled out that it is a 3rd party app. If it does stabilize then one of the 3rd party apps is triggering it. The hard part now is to find out which one.

Now just wait for the thread to appear that says "iOS update 12.4 now Battery draining". The early posts will ask how you go bak to 12.3.1 which was working perfectly.

Apple takes REAL customer complaints seriously. The issue is not a real complaint. It is a problem with your phone, not with any specific version. If it was caused by the version, which is installed on roughly 500 million phones, you would see tens of thousands of posts about it. So first update to 12.4.1 (which fixes a really critical vulnerability) and if you still have a problem either use standard troubleshooting techniques or make a Genius Bar appointment, where they will use those standard troubleshooting techniques in front of you-->Genius Bar Reservation and Apple Support Options - Apple

Now that you have used it for 2 days in Settings > Battery which processes/apps show to be using most of your battery?

So finally 12.4 is released! . Make sure to update via iTunes and share with us y’all experience.

Yes! iPhone SE. Yesterday I picked up my phone which had been sitting on my desk all day unused and it was down to 12%. When I checked battery usage 65% of that was from Messages. This morning my phone had gone overnight from fully charged to 11% and 45% of usage was battery. I’m glad I found your question! Rebooting the phone by holding the power and the home button for several seconds will help for a while.

Yep yep yep I did the EXACT same thing I had to downgrade to 12.3 and so far my phone is working normal again and yes since my last backup was of course with the 12.3.1 I couldn’t use it so I had downloaded everything again :(

My solution to the battery draining on my 6th gen iPod touch... I got myself a thin power bank for 5 bucks from five below and a 6 inch lightning cable from Amazon. A rubber band to connect the two and I can now enjoy my podcasts again while I mow my lawn.

looks like this issue is affecting all apple devices, even the new ones. I gave up on Apple solving the issue for my 6th gen iPod touch. I bought a $5.00 power bank from Five Below and a 6 inch lightning cable from Amazon. Rubber band them together and I’m back in business. Very sad situation but at least I have my podcasts again while I mow the lawn.

If it helps anyone, since I updated to 12.4, the battery drain problem is now solved. This issue was not specifically addressed in the update, but it seems that it HAS solved the problem on my iPhone 8.

When I hold in the power and home buttons (different on other models) until the apple symbol appears the drainage problem goes away for a few days

So update to 12.4