Does a new iPhone screen fix unresponsive touch?

I recently dropped my iPhone and the screen cracked. After about a month and a half the screen is getting worse. There's now a portion that is discolored and unresponsive to touch and sometimes it will open apps or type with out touching the phone at all. If I got a new phone to fix the crack, would the other problems go away as well?

The screen has a digitizer (touch sensor) connected to it. That needs to be fixed when the screen is. They come as a combo replacement part. Best luck.

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