I can't hang up, reject calls on the screen (red receiver)

Hi,

After screen replacement I can't hang up reject calls on the screen (red receiver). No reaction when I press it. Please help

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I also noticed that this problem also affects incoming calls. The moment I answer the call, the screen goes off and after pressing the home button, the image appears on the display, but as if it was blocked and I can't press anything as if the touch was not working. This only happens when you make a call. Besides touch, the screen works normally. Is that a lcd display problem?

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