Help! Touch Not Working

Hello!

The issue with my iPhone X is the touch isn’t being recognized, the display works as normal though.

My initial thoughts are this is the digitizer, however, it hasn’t sustained any damage which is making me also think it could be the logic board.

I understand the best way to see which one it is, is to try a different screen but are there any alternative methods I could use instead of buying a new screen and risking it not being that?

Thanks a lot, any help is appreciated,

Sam