iphpne x screen of death and force reboot doesn't work
My iphone x had this probem recently and i've tried force restarting it. it worked. but then again, it happened and force restarting is not working anymore. but the phone still works.
iPhone X
Make an appointment to have your phone examined at your local Apple Store if you feel it is operating improperly:
Genius Bar Reservation and Apple Support Options - Apple
Make sure you are using the appropriate force restart instructions for your phone - but you should rarely if ever need to use it:
If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support