To get rid of whatever is corrupt in your phone, use this link and what you should do is restore your phone:
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
Unfortunately I have the same issue. Went to bed 97% charged (set to airplane mode) and woke up at 35%!!!
The battery usage did not show anything different than during the day - this is really weird...
To get rid of whatever is corrupt in your phone, use this link and what you should do is restore your phone:
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
Maybe you have background apps running?
youtube has been nasty lately when it comes to background battery use
Then it's time to do a phone restore. Something happened during the update and clearly something became corrupt.
With tens of thousands of people complaining about the battery drain since receiving brand new $1200 phones -- it's definitely an issue for Apple to address..
Right?!
Right? My much anticipated IPhone X has to got to be charged 3x a day,
Battery problem?
I have the same problem with my iPhone X
Went to sleep fully charged and woke up with 80%
And noThing works on background. I turn everything off.. software problem???
My back up storage was full so I turned it off. Could it be from the back up trying to back up while it’s full?
Certainly possible. Sounds like you need to buy additional iCloud storage. It only costs $.99/month to take you from the free 5GB to 50GB.
Look under "Battery usage", what is draining you buttery?
I have solved my problem updating to iOS 11.2.5
Try to restore it, I had that problem and a restore solved it
Update to iOS 11.2.5 by a full restore
iPhone x battery draining so fast.