[GUIDE]How to fix proximity bug of any rom in micromax a120 topic

After doing some research I found a way to fix Proximity
bug of all roms made for c2c..just
switchoff the phone>press vol up,vol down and power at
the
same time> press vol down to enter factory test
mode>now
goto item test(press vol down 4times)>touch menu key(left
capacitive touch button of your phone)>now goto ps
calibration by pressing vol down key >press menu to
confirm>cover the proximity sensor with your
thumb>select
calibrate by pressing menu key..now press back and
reboot
your phone>enjoy .