iPhone X battery drained 100% overnight

I actually was able to resolve my issue by force closing all my apps and restarting my phone. On the iPhone X in case you haven’t had to do this yet, you push the volume up, push the volume down, then hold the screen lock button until you see the Apple logo. My phone battery has been working properly every since. No more battery draining overnight!

I hope this helps solve your issue as well.

Check which app using your location: ”always” and change it to ”never”or “when I use the app”. For me this worked Facebook was the cause.

Cheers

I just verified the battery usage, 53% was used by Siri!!!

I very seldom use Siri, and have only used in 2 or 3 times since I got my new iPhone X.

I suspect that something goes wrong either physically with the lock/power/Siri button or with the associated software.

For the moment, that’s my take on it.

This just happened to me. I turned off true tone in brightness and perhaps that will help

I just realized I should clarify in case Chris or any of the other users didn't understand what "trickle charge" means or what implications it could have on battery life since even Apple workers are not briefed in-depth and generally told that their phones cannot be "overcharged."

In actuality there's a lot of very real issues related to what a layman might refer to as "overcharge." In terms of 100% phone plugged in overnight, simply put it's not going to stay at 100% the entire time. The charger maintains a trickle charge to keep it topped off as it gets under 100%, and the entire time constantly monitors the charge. As it clicks on to top off the charge it "bounces" the phone between depleted (a tiny amount) and full. This generates heat, with heat being the killer of batteries, you can expect that even in normal use this continuous higher ambient temperature over thousands of hours a year as you sleep will degrade to whatever degree the life of your battery.

Now reality *every* time you charge your phone, especially to full charge, you are "reducing" its battery life a minuscule amount. In fact battery manufactures figure into the projected average battery life such issues. But as any iphoner knows, battery life is not consistent neither in manufacturing nor in usage. Most people want the most out of their phone not just the average or minimum. If you're setting "best practices" and satisfied enough to proselytize a method you got to know what is going on at "my 100% charged phone" is actually a constant "bounce" between full charge and *charging* when your phone has a set amount of charge cycles to begin with. The saddest part is that charging to 100% is unnecessary to begin with. As Lithium-ion unlike lead acid and other technology does not need to be "topped off" or have a memory effect. Sad face

Im also experiencing very similar problems with my iPhone X. Battery Drain overnight with no applications running. Phone randomly getting hot in my pocket. (not super hot but slightly warm)

I just got my iPhone and I'm already experiencing these problems. Not sure what to do.

hey Mark i'd wager that if your issue was solved it was more likely due to the hard reboot than auto-brightness by itself.

did you or anyone else change any settings before you first experienced the issue, and by chance have had any issues with the lock screen not engaging?

I just experienced the same problem. My new iPhone X battery was at 100% last night, only to wake up this morning with a dead phone. I just put it on the charge and will see what the overnight power usage was once its charged.

To my knowledge, the screen lock was on and I have not changed any settings recently other than configuring the home button, trying it, and turning off accessibility in order not to keep the home button on the screen. While the home button was on the screen, I pressed it and the start button simultaneously to clear the cash (as indicated in another blog). Note that I received the iPhone on 9 March 2018.

I intend to go to the Apple Store today to get Apple’s take on this and would appreciate any additional input.

I never had this kind of problem with my iPhone 6!

Now I feel that my new iPhone X is not reliable, especially that this kind of thing takes place overnight.

First off, thank you for taking the time to prepare this response to me, however I'm not experiencing any problems with my device, so I'm not sure why you were addressing that to me.

Plugging in your device while at 100% will not waste electricity, as the charging circuit in the iPhone will not use anything if the battery is charged. Once the battery has reached 100%, the charging circuit turns off, and will not turn on again until needed. It is not going to over-charge, as the circuity is designed to handle that.

The ability for the iPhone to automatically run an iCloud backup is dependent on the device being connected to wi-fi, and connected to power. While you have the ability to create a backup while not on wi-fi, the only way the automatic backup will run is while on wi-fi and connected to power. Those are the requirements. I never said that it had to be at 100% to backup.

I've never heard of a screen lock bug, nor do I know what you are referring to when you say "the setting for dead interval before lock in certain conditions". I have no idea what you mean here.

I have the same problem. My iphone X was at 100% last night and I shut all apps off. This morning it was at 1%. I turned off auto-brightness and rebooted the phone. So far that seems to have helped my phone from draining. I have been steady at the same percentage from this morning (roughly 3 hours) so far without any percentage drop. You might want to try that and see what happens. It kind of ***** that you cannot use auto brightness on iphone X without it killing your battery...

Why would I have to charge my iPhone X overnight if it is at 100%? There is no need to just have it plugged in. My iPhone 6 would only drop 3% overnight while I am sleeping not 99%. Standby on the iPhone X should be days not hours. The talk time alone is supposed to be 21 hours. So I do not see the point of plugging in my iPhone when I go to bed for 7 hours and my phone starts at 100%. I would expect to wake up to minimum 90% left and more like 95+% left. I can live with that, but to wake up at 1%...

I suspected my phone draining my battery for the past couple days so I made sure to close all apps. Normally I did leave my apps suspended but this just started happening after I updated to 11.2.1. Since turning off that auto-brightness and rebooting, my phone seems to be holding the charge. Maybe it just needed to be rebooted... I will see what happens tonight when I have my phone unplugged.

I do not know for certain if Apple looks at these forums, but you can submit feedback to Apple about a problem and they do listen to that. I have reported a few issues in the past and they were addressed in the next update.

here is the link:

Product Feedback - Apple

I also did that but it never fixed the issue when I forgot to force close apps before I fell asleep.

I have auto-brightness turned on for my iPhone X and have not experienced any problems. One question I would ask is why do you not charge your phone overnight? When the iPhone is connected to power, wi-fi, and locked, it will automatically backup to iCloud, if configured that way. It does not make sense to leave the phone unplugged overnight and wake up to a partially charged phone.

I suggest that something was caught trying to process and didn't finish when you attempted to close apps. When you say you shut off apps, did you just close them by swiping upwards, or did you force closed these apps by going to multi-tasking and tapping on the ➖? Force closing apps is also not necessary, as leaving them in suspension is better for battery life than force closing them, since doing that requires all the power and processor to reload the entire app, rather than just starting it from suspension.

I explained why you should have the device plugged in overnight. It is your choice how you wish to handle your phone if you disagree with my assessment, but it isn't necessary to ask why.

Again, it was probably something to do with a process being stuck, not necessarily auto-brightness. I have that turned on and do not see any issues there. You can take a look at Settings>Battery and find out what is using the highest percentage of your battery usage.