Dear Fairphone forum users,
Since a week or so my screen turns black during ongoing calls and I am unable to use my phone, except for speaking on the phone, until the other one has hung up. Quite annoying, because I have no ability whatshowever to end a conversation myself, except for kindly asking the other to hang up.
Also my FP2 randomly goes black screen from time to time which I can only ‘fix’ by taking out the battery or waiting some minutes for it to randomly turn on again. My case is falling apart after the many times of taking out the battery 
Suggestions?