Iphone XR battery drains after updating to ios 13.4.1

Hello,

The standard steps for short battery life are as follows:

1) Have you tried a restart?  If not, do it now.

2) Go to Setting > Battery > BATTERY USAGE BY APP to see the apps that are consuming your battery.

3) Check “Battery Health” in the link: 

iPhone Battery and Performance

4) If all else fails, consider a battery replacement:

iPhone Battery & Power Repair

Good luck.

It's actually all over the internet how iOS 13.4.1 is HORRIBLE on battery drain, specifically on the iPhone XR.

Can you undo the latest IOS update?

Can you undo the latest iOS update and restore to iOS prior to 13

No.

No.