OK, got it, thanks for all these explanations.
EDIT : Calibration done, will give you feedback asap
After calibration cat prox_cal gives me : 440048, 4404168, 4404128
Same problem again, the problem is not a calibration problem.
An idea to restore prox_cal to normal?
EDIT 2 : Found on xda (thanks to xcxa23)
To do in a bright place
On a terminal :
type "su"
type "echo 0 > /sys/class/sensors/proximity_sensor/prox_cal" ==> it will force the sensor to reset
type "echo 1 > /sys/class/sensors/proximity_sensor/prox_cal" ==> it will force the sensor to recalibrate
type "reboot"
It recalibrate automatically the sensor but it does not solve the problem of phone app.
I'll test if the problem happens again, I'll get you feedback.
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