How do you fix an unresponsive touchscreen if the USB-C port isnt working and the soft reset didn't fix the

I know that you mentioned that you have done “Soft Resets”. Are those the same as Forced Restarts? See below:

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(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 that does not help, then contact 👉 Official Apple Support OR you can always get your iPhone examined at the Apple Store 👉 Genius Bar Reservation and Apple Support Options or at an Authorized Service Center for further diagnosis and evaluation. Your iPhone 15 Pro is still under Apple’s 1YR Limited Warranty (US). Take advantage of it.

Axel F.

Contact 👉 Official Apple Support OR you can always get your iPhone examined at the Apple Store 👉 Genius Bar Reservation and Apple Support Options or at an Authorized Service Center for further diagnosis and evaluation. Your iPhone 15 Pro is still under Apple’s 1YR Limited Warranty (US). Take advantage of it.

Axel F.

Remove any debris from the charging port on the bottom of your device.Restart your iPhone or iPod touch. Try a different USB cable or charger.Make sure that you have the latest version of iOS.

If your iPhone or iPod touch won't charge - Apple Support