My iPhone X is on, but no display.

(1) Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

• Press and quickly release Volume UP button
• Press and quickly release Volume DOWN button
• Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF)

(2)  If the above does not work then - Try the following 👉 If the screen isn't working on your iPhone

Axel F.

"My iPhone X is turn on, but no display, screen is blank."

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You're Likely Stuck in a Boot Loop:

Perhaps it is stuck in a Boot Loop? This can occur when updating, and it got frozen.  So, use MY User Tip: How to Fix an iPhone in a Boot Loop - User Tip