White spot on LCD

Hi i bought my honor 7 over a month ago and it was working fine until today. It was in my pocket and had a very very light fall on my foot when i bent forward and then on to the floor. There was no damage to the body or the screen, i had a hard case and standard screen protector which came pre installed on my phone so there was no scratch nothing as the fall was pretty light. Everything seemed fine but now i saw a white spot on the lcd in the middle, its not on the screen i think its on the LCD although im not sure. How can i solve it

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