My Xperia c5 screen turns black when attending a call or make a call, why is this happening?

[AC Question]

my xperia c5 screen turn black when attending a call or make a call

my xperia c5 screen turn black when attending a call or make a call.... and its long for a sme time waht is solution for it ??

 

[dpham00]

Re: my xperia c5 screen turn black when attending a call or make a call

Does pressing the power button turn the screen back on?