Right side of touchscreen is not being recognized when I touch it (after updating software to 15.2.1) iPhone X

⇢ If the iPhone screen isn't working. ⇠

▷ Update your iPhone. 📲

If that doesn’t work, try a Hard Reset:

1. Press volume up (quickly)
2. Press volume down (quickly)
3. Press and hold the power button until the Apple logo ( ) appears

If that didn’t work, it could be a hardware issue. ⚠️

Get expert service and support at the Genius Bar.

▷ Call 1-800-MY-APPLE or get help here. 

I'm covering all aspects of the process for a complete solution.

If all else fails, there's the Genius Bar. 😉