https://community.sony.lt/t5/xperia-archive/screen-black-out-while-making-call/m-p/3159821#M331478 That's not a problem .. Its a feature... So that Phone's touchscreen doesn't respond to one's ears while calling<BR />Good if people didn't know about it<BR />Screen guard also should have a gap near the sensor &amp; original phone covers should be used Mon, 13 Jan 2014 11:45:57 GMT Vengence 2014-01-13T11:45:57Z https://community.sony.lt/t5/xperia-archive/screen-black-out-while-making-call/m-p/3159820#M331477 <P>I had same problem with my Neo V. I have noticed I start facing this problem when i replaced the body of my mobile. I Did loads of testing and finally found that its light sensor was giving me problem.&nbsp;</P><P>Light sensor is near to front Camera.</P><P>Solution : Try to make call in full sunny day and check whether display is going&lt;it is dificullt to notice the screen on sunny day&gt;. Reposition the light sensor with it's guard(two very small guard size 1 mm only). Check the guard whether it is broken or not hinder the light completly.</P><P>I am happy i have fixed it myself without approaching service center.</P><P>Regards</P><P>Harsh&nbsp;</P><P>harsh.k.arora@gmail.com</P> Wed, 08 Jan 2014 06:44:49 GMT https://community.sony.lt/t5/xperia-archive/screen-black-out-while-making-call/m-p/3159820#M331477 HarishNeoV 2014-01-08T06:44:49Z https://community.sony.lt/t5/xperia-archive/screen-black-out-while-making-call/m-p/3159821#M331478 That's not a problem .. Its a feature... So that Phone's touchscreen doesn't respond to one's ears while calling<BR />Good if people didn't know about it<BR />Screen guard also should have a gap near the sensor &amp; original phone covers should be used Mon, 13 Jan 2014 11:45:57 GMT https://community.sony.lt/t5/xperia-archive/screen-black-out-while-making-call/m-p/3159821#M331478 Vengence 2014-01-13T11:45:57Z