Hi, i have this problem and i have run to stores and internet but no one cant answer correctly whats the solution.
Every time i replace the touchscreen of a 9800 white, as soon as a call is made the proximity sensor is activated.
There is not any privacy in the touchscreen, i have even remove the adhesive on the touchscreen, change the flex, but still cant fix it. Even replece the screw with new ones.
I have one that used a black one, but as soon as i change it to a white touch, it start the malfuctioning.
