iPhone 13 Pro battery draining overnight

Same problem on iPhone 13 using dual sim (esim and nano sim), on 5g auto and vowifi for both carriers ios 15.3, location services off except find my, with or without air tags, no fetch and push notification/ emails

The only thing that stopped the battery drain on standby for me was either the following:

Put my phones on airplane mode just before sleeping

and/or

Set the cellular data to the nano sim instead of the esim

I have exactly the same problem with my iPhone 13. Last night, the battery drained 100% overnight, and when you check the battery usage there's literally nothing listed for any app or process when you tap on each section of the chart.

It was working completely fine until a few days ago. It would sit all night on battery and lose maybe 1% by the time I woke up.

The only thing I can remember doing in the last few days was a WatchOS update. Wondering if that could be the problem.

After some investigation, I've found that it's Bluetooth that's causing continuous battery drain while on standby.

If I disable bluetooth, then the battery doesn't drain on standby at all.

I've turned off bluetooth on my Apple Watch, so that my phone's bluetooth isn't connected to any devices at all, and it still happens.

I've turned off airdrop completely, and it still happens too.

So, even with bluetooth on but connected to zero devices there's a constant drain. The only thing I can do to stop this is turn bluetooth off completely.

That's incredibly inconvenient because I need to use bluetooth earphones with an iPhone 13 since they removed the headphone jack...

That’s interesting. It must be the device that you’re attaching to because I have Bluetooth on all the time and it’s not an issue. If you go to the battery setting and take a look at the graph for the highest usage of the battery what do you see at that time?

Sbond1963 wrote:

That’s interesting. It must be the device that you’re attaching to because I have Bluetooth on all the time and it’s not an issue. If you go to the battery setting and take a look at the graph for the highest usage of the battery what do you see at that time?

Nothing is listed at all. No apps, no system stuff. Same as the screenshot further up thread that @angeant posted. And like the screenshot that @kesslea posted the drain is completely linear.

I have 2 bluetooth devices paired. I've turned them both completely off, and the drain still occurs. The next step is to unpair them both, but that is pretty inconvenient step as one of them is an Apple Watch which you can't use at all if it's not paired with a phone.

Looking in the 10 day battery history the issue began on February 12 which (I think) is the day I updated to the latest iOS patch (10.3.1).

I know it's an old thread but I'll add my two pennies worth about the standby time issue.

I purchased the 13 mini and was experiencing the same 50% battery drain overnight. Turning off bluetooth and the location services trimmed the loss to around 30%. Still pretty terrible for a new phone with no apps installed on it but then I tried turning off mobile data and the drain virtually disappeared.

As pointed out by various posts in this thread, the problem was poor signal coverage for 4g with my original network provider. I have since switched over to a carrier which produces 4 bars (versus the 1-2 previously) and the problem is completely solved, eg charged to 100% about 21hrs ago and it still has over 73% left with very light use.

So there you go - no need to return the phone :-)

I just bought my iPhone 13 pro max for battery life but today my second day and I used only 1 hour it was 100% and my battery gone down to 87% I believe that a lot dropped down , plus I just used for Facebook and YouTube.This seller might used then change the package made looks like new? Please I need you thought. How could I understand I haven’t been cheated?

Many thanks

regards

I had a very similar issue with a new iPhone 13 Pro Max - it would lose 30-40% overnight, every night. It was a straight transfer from a 12 Pro Max which only lost 2-5% overnight.

I tried deleting and re-installing the apps that looked like they were draining the battery - made no difference.

After looking at a few videos online to see what could be done, I found that 5G was on despite me only having a 4G contract, so I changed that to 4G, and a couple of experts said to reset all settings - so I did. It’s a real pain, and it’s taken me ages to get it back to where it was.

However, one of those things fixed the battery drain - it’s now just 2-5% like my iPhone 12 was. Don’t know for sure which fixed it, but I suspect it was the settings reset.

I had EXACTLY the same thing and had to do a 'reset all settings' and it fixed it. My phone is just like I would expect now re overnight battery drain - around 5%. Reset all settings leaves all your data intact, but it's REALLY painful to get it back how you had it. Took me well over week - soooo many settings!

I transferred from my last iPhone though, and lots before that. If you set up as a new iPhone it might not be so painful.

I'm not on a 5g contact but 5g was checked, that might have done it but I doubt it (I did that at the same time as settings thing).

Good luck!

I initially had this issue so turned on low power mode at night which seemed to help. But then after a recent iOS update it isn’t happening and I’m not using low power mode at night anymore. I also think that it takes a new phone a couple weeks or so to ‘adjust’ but I haven’t noticed this when setting up new iPad although tend to put on airplane mode overnight so that might be why. I remember this happening with other iPhones too but not nearly as bad as the 13 Pro - Thankfully it’s now acting normally!

what do you mean the wifi disconnects when the screen is locked , it doesn’t at all otherwise how would you get notifications when airplane mode is on and using wifi , don’t tell people things when you clearly don’t know what you are talking about. utter nonsense.

For me, after a complete reset of my phone and watch everything is back to normal and working fine for months now. I didn’t restore from iCloud backup, I set up as a new device. Battery is fantastic again.

It was quite a pain finding the time to do, but I’m glad I managed to sort it out. Resetting as a brand new phone is annoying, but on one hand I also managed to get rid of a lot of old unused stuff that I’ve been carrying around for years.

For me it was definitely something to do with my Apple Watch - battery drain completely went when I unpaired the watch. But I love my watch, so decided to do a complete reset of everything and thankfully it solved it.

What's wrong is that the steep, linear draining of the battery over the course of 6 hours is while I'm *not* using the phone. That is completely undependable! The green bars indicate the phone being plugged in, so no, it didn't last 15 hours.

Think of any other battery-powered device you own. Literally any other device, past or present. Would you stand for it losing 100% of its charge in 6-8 hours while you weren't using it *at all*?

I have the same issue, it's a brand new phone, iPhone 13. Purchased on 22nd May 2022. Phone works properly during day time but overnight battery drains, its highly unpredictable. Strange thing is battery drains without the use of any application or phone itself, I just keep the phone on table during I sleep.

On Battery application it shows that no application was running during night (12am-7am) time but battery is drained.

Did you migrate from a backup? I've hear some say that iPhones do a lot of background processing to optimise the install and it stops after a while. It didn't for me with my 13 Pro Max, so I reset all settings.

It's not as painful as you think, it just takes a long time of noticing things aren't quite as they were and giving them a tweak. It fixed mine - went from 30% + drain overnight straight to what I would expect of an iPhone battery, just a few %.

If you're not on a 5G Tarif make sure 5G is turned off, some have said that has some bearing on the battery drain issue but I've not seen a test that proves it.