My iPhone screen won't respond to my touch?

I recently just got my iPhone thrown against a wall and I have an OtterBox case on it it didn't break but it does not respond to when I touch it I can use Siri and it seems to be fine everything else but I obviously have no way into my phone or using it unless i use Siri because when I touch it doesn't work

You must replace its touch display as its gone.

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