Proximity Sensor Bug Fixed, .Screen turns off during call.ISSUE FIXED

Methods that worked for me.
Method 1.
Blow Air it will solve your prob hopefully.

Method 2.
go to samsung code *#0*#. then SENSORS and Read your Proximity sensor values.

<<< DECISION >>>>>
####Calibration isnot needed if ####
.
your phone doesnt vibrate in normal but does so when u physically put your finger on the Sensor.

#### Calibration needed if ####
.
your phone is vibrating in this menu no matter what, you put your finger on the sensor or not
Follow these steps
1. download Android Terminal from store
2. type these commands to calibrate automatically
$ su
# echo 0 > /sys/devices/virtual/sensors/proximity_sensor/prox_cal
# echo 1 > /sys/devices/virtual/sensors/proximity_sensor/prox_cal

Reboot and see if it works.go to *#0*# and check if it continuously vibrating or only does so when you put your finger on the SENSOR.

<<<< IF Continuously Vibrating Follow these steps>>>>

you need to manually put values in ur /efs/prox_cal.it Reads Hexadecimal value. so you have to convert your decimal values into HEX.

##### FIND YOUR Decimal Values and pushing them into /efs/prox_cal ######

Method : finding two values for calibration . offset + normal value.
##.. FINDING OFFSET ######
cat /sys/devices/virtual/sensors/proximity_sensor/prox_cal

note down the values it returns.. mine is 5,64,100.. you only need the 1st value which is 5.
### FINDING NORMAL STATE ######

cat /sys/devices/virtual/sensors/proximity_sensor/state
note down the value if returns. mine is 64

now ADD OFFSET value + Normal Value
5 + 64 = 69
Convert in Hexadecimal which is 45.

<<<<<<<<<<< Pushing the value in /efs/prox_cal >>>>>>>>>>>>>>

# echo -en $ '\x45' > /efs/prox_cal

then
# chown system:system /efs/prox_cal
# chmod 644 /efs/prox_cal
# sync
# Reboot

All done. after that go to *#0*# then SENSORS and move your finger on the sensor, yout phone will Vibrate only when you put your finger on the sensors.

Manual method worked for me.
ENJOY.
NOTE: I am not a developer. i was just stuck with this problem for so long so now i found it from "mcelicalderon". who posted this method some where