"According to Marco the issue is clearly a design flaw which Nokia is fixing in all future production by introducing a sheath placed around the front facing camera and proximity sensor to better insulate them from dust build-up.
The good news is that existing devices with this issue will also be able to take advantage of this solution by taking their device to a Nokia repair service."
Source: Nokia Lumia 920 front facing camera and proximity sensor dust fix on the way? | WMPoweruser
The good news is that existing devices with this issue will also be able to take advantage of this solution by taking their device to a Nokia repair service."
Source: Nokia Lumia 920 front facing camera and proximity sensor dust fix on the way? | WMPoweruser