the battery drains within an hour of mild use; the screen will darken and its not set to do this, I can see the slider slide on it's own and it won't lighten up; the Bluetooth is acting up as well, is there a solution to this?
iPhone XR
Try force closing all apps and then restart your device - How to force an app to close on your iPhone, iPad, or iPod touch - Apple Support
Restart your iPhone - Apple Support
If that doesn't work, restore your iPhone to factory settings. Test the battery life before restoring data (in other words, set it up as a new device) - Restore your iPhone, iPad, or iPod to factory settings - Apple Support
After testing the battery life without doing a restore then you can restore a backup - Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If it works before restoring and doesn't after then there's a problem with what is loaded or iOS is corrupt. If it doesn't work before restoring then you'll want to talk to Apple Support.
Try force closing all apps and then restart your device - How to force an app to close on your iPhone, iPad, or iPod touch - Apple Support
Restart your iPhone - Apple Support
If that doesn't work, restore your iPhone to factory settings. Test the battery life before restoring data (in other words, set it up as a new device) - Restore your iPhone, iPad, or iPod to factory settings - Apple Support
After testing the battery life without doing a restore then you can restore a backup - Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If it works before restoring and doesn't after then there's a problem with what is loaded or iOS is corrupt. If it doesn't work before restoring then you'll want to talk to Apple Support.
Last update 14.2 has destroyed my iPhone XR
