iPhone X screen is frozen

1. From the lock screen, swipe up from the bottom of the screen then enter the passcode if prompted.
2. Tap Settings  then tap Display & Brightness.
3. Tap Auto-Lock then select the auto-lock time interval (e.g., 1 Minute, 2 Minutes, 5 minutes, etc.).
   

 Selected when a check mark is present.

1. Tap  Back then tap  Settings.
   

 Located in the upper-left.

1. Tap Face ID & Passcode then tap Turn Passcode On.
   

 If passcode is already turned on, enter the passcode then skip to step 8.

1. Enter then re-enter the passcode.
2. If preferred, tap Change Passcode then:
   1. Enter the old passcode then enter and confirm new passcode.
   2. Tap Done.
3. From the 'ALLOW ACCESS WHEN LOCKED' section, tap any of the following desired switch(es) to turn on  or off :
   

 When turned on, access is allowed when the screen is locked.

• Today View
  • Notification Center
  • Control Center
  • Reply with Message
  • Home Control
  • Return Missed Calls
  • USB Accessories
  • Erase Data
    

 When turned on, all data on device is erased after 10 failed passcode attempts.