Iphone 17 and labeling eliment while in a call

Hey all:
am using Iphone 17 with latest IOs 26.1
each time i have a call and am putting the phone on my ear, i got the eliment labeling sound, and i should use flec up to go out from this thing,
also some times the braille screen worked, i do not know why,
something related to sensor or a setting inside my phone that i should toggle?
Very annoying really