iOS 15.3 battery drain

ficelles wrote: "...Your battery suggestion ignores the fact that the battery drain issue appeared with the installation of iOS 15.3..."

Another fact is that the long process of applying an iOS update can strain a weak, aging battery and be the proverbial "straw that broke the camel's back". Users then often mistakenly blame the new iOS instead of the aging battery.

You previously wrote here: "...My original version SE will no longer last much over half a day without charging..." So in order to eliminate the possibility that your iPhone SE's battery was already weak and vulnerable to the strain of applying an iOS update...

Does your original version SE still have its original 6 year-old battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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You are correct in one point. If the battery drain is caused by installed junk (8 out of 10 cases) then restoring a backup is pointless.

So

1. move or import all your photos, videos, documents to an external storage like iCloud or a Mac
2. DFU the iPhone to pull in fresh iOS copy.
3. sync the media and documents back and rebuild only the most important apps from scratch excluding security apps.

Do not restore backup, though you might want to make one just in case.

I recently purchased iPhone 13 pro. My battery health is 100%. After updating to ios 15.3, I’ve noticed my battery is draining way too quickly. Previously my phone used to last for 26 hours approximately with normal usage. Now it barely lasts for 14 hours(including standby time)with minimum use.

Even when the phone is on standby mode, I am loosing 7-8% of battery with no apps running in the background.

Same for me. My iphone 11 battery gets drained very fast since the update. Last night, from 100% to 85% without any usage. I was sleeping and something is draining the battery. All background stuff is turned off. I used to charge my phone every 2-3 days, now I got to charge it 2 times a day. Apple doing this on purpose. Trying to kill our phones to get new ones.

I bought a new IPhone 13 pro from an apple store and set the phone up where I was forced to install IOS 15.3…the first 2 days were fine then today I lost 50% battery life in around 4 hours.

Pretty ridiculous and apple need to sort this out!

I was in the store on 1/30 for an unrelated issue and they ran diagnostics, max capacity was at 96%. I also had some apps crashing so they recommended updating IOS. I was running 15.2, updated to 15.3 that night. In a matter of 3 days, my max capacity is at 87% and my phone dies in less than 6 hours. Most of that time it is on standby. Today I called support, they ran diagnostics and said my battery was fine, phone was at 26% charge, died in 1 hour while in standby mode the phone time. It’s insane my phone is 1 1/2 years old and now the battery is **** because of their update.

So many of us have reported this through this forum / thread and others - it's surprising that there's been no response from Apple at all. At the very least it would be good to receive an acknowledgement, at best a [real, not "update OS, restart phone, track app usage"] solution. Has anyone heard anything about this issue from them that's made a real difference? If battery health is being affected, they should also replace batteries in affected devices.

I have an iPhone SE 2020, and since iOS 15 (I believe), the phone is dying when I hit 37%, I charge and it's at 12% I really hope this update fixes it because I don't know how this drain can get any worse. I went to Apple Store for diagnostics, and battery seemed totally healthy. Come on Apple, fix your product/software.

I have the iPhone 13 pro (not the Max). I had terrific battery life on iOS 15.1 (could get 9 hours of screen-on time), but ever since I've upgraded to 15.2 and above, I can only get about 6 hours of screen-on time.

Dear apple, please fix!

I thought it was JUST ME! I had it taken too the Apple Store in a nearby mall cause something got stuck in the charging port. The employee ran diagnostics and everything came up fine. But when I get home I have similar problems.

The phone gets very warm and when I charge it, it always chugs when it goes from 90-100%! And when I left it on overnight, the battery dipped when I check the health.

My iPhone is the 12 Pro for reference, hopefully Apple releases an update that fixes this, or compensates by giving people having this issue a free battery replacement.

Battery drains extremely fast now in my 7 months old iphone 12 too after the update. I wish I could go back to the older version of ios. I ran the battery health check and it says maximum capacity is still 100%. But, still it drains crazy fast . Hope Apple comes out with a fix soon.

Hi since updateing to iOS 15.3 on iPhone 8+ IPad Air both phone getting very hot before updateing phone was ok . My Question is can I go back to previous iOS 15.2 as their was no problems their also my wife’s phone & her ipad

I usually avoid updating to latest IOS especially on my iPhone. My last one, iPhone 8 Plus, always had issues when I updated. Now I have a near new 12 Pro Max. I waited for some time before updating. Stupidly I decided to do it very early this morning. My device is in great condition. Battery health is 99%. I use it wisely ie: not on it for random searches and apps. Perfect running order. Never got hot or warm.

Battery charge never ran out, often getting 2 whole days from a full charge.

Immediately this morning I felt the device get hot. Not warm, but HOT. Charge dropped to 50% within 2 hours, of no use BTW.

Called Apple as YouTube was useless, and they told me the usual, do a reset, blah blah... nothing has helped. The last person told me to back-up files then delete data and re-install..... Jesus Christ!!! No guarantee this will work either, not do I have that kind of time free. I am sick to death of this from Apple. When they work it's great..... then this happens. And it is not an isolated occurrence.

Does anyone have any advice? Greatly appreciated and thank you.

Toon Up wrote: "...My phone goes from 100% to 1% in minutes and then stays there for hours..."

Toon Up ~ What model of iPhone is it?...

Settings > General > About > Model Name

And what's the % value here?...

Settings > Battery > Battery Health > Maximum Capacity

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So you will understand that 9GB of code needs beta testing as well as the alpha testing that you maybe are involved in. With 2 million apps to choose from how many hours would you need?

I repeat, iOS15.3 has no problem, but some of those 2 million apps may well have.

Apple releases developer betas for them to test their creations.

The devs are responsible for detailed beta testing.

When Macrumors, Forbes and Apple Insider report major battery problems I may believe them.