Display on off while call, and bad understanding

[yvmuell]

Have a look here

Having the phone at the ear, screen switches between on and off

Hi everyone! Happy owner of a FP4. But: Taking or making a phonecall should turn off the screen while at the ear. In my case, the screen switches on and off, allowing all background apps like maps, mail, sms to activate functions by skin contact. It seems like the sensor is not responding, or is not sensitive enough. Is there help to get, or is it just a FP4 bug i have to live with? All the best Ronald