HTC One - M8 - Screen turns on when talking in the phone, any fix?

[AC Question]

Hello

When im having a normal conversation on my phone(against my ear) the screen keeps turning on, anyone got a fix or is it a hardware issue with my sensor?

Im randomly changing settings and turning on speaker-phone by misstake while just talking...

 

[Ahmed Atef6]

me to have this problem

 

[NGDNY]

I'm having this problem almost every conversation now. Does anyone have a solution? Thanks