proximity sensor issue

[Renis]

When the sensor(always on) is on,my front camera is blinking.Is it a board complaint or Update error???My updated version is 15.3.A.1.12

[GabrielBrunet]

I have no screen protector, the cell is clean and quite new. I tried xperia disgnostic and it tell me the proximity sensor is always detecting something. I tried calibrating the sensor with *#*#7378423#*#* but the ability to calibrate is not present only the testing. According to sony pc companion i have the latest version. I just resetted my phone to make sure it was not the problem. 

Build Number: 14.3.A.0.757

android 4.4.2

[MERNOK]

DEAR SONY!
COULD YOU PLEASE FIX THE PROXIMITY BUG PROBLEM IN SOFTWARE 15.3.A.1.17
REALLY ANNOYING!!!.