hi guys , This is NOT a software issue !!!!!!
Very easy Fix = first open your screen , this link = http://www.youtube.com/watch?v=iNM90pb-Xwk
then you can use a thin colored plastic layer, cut it to fit the sensor and glue it to the sensor , this image = http://www.iimmgg.com/image/0db8ed363bf3b93be62a121242d821f5
then replace your screen , this link = http://www.youtube.com/watch?v=E2r1sOML2Gg
Well Done .. its working 100 % tested on 3 iphons