Update iPhone XS battery life
I updated my IOS to the latest version and my battery life dropped from 24/36 hours to around 8 hours. I have turned off all settings that I am aware of. Can you help.
iPhone XS, iOS 13
If you updated to iOS 13.3.1, using Wi-Fi, try again to use iTunes on your computer and restore from the backup you made before.
If you create an encrypted backup, it will also contain your passwords.
Restore your iPhone, iPad, or iPod to factory settings - Apple Support