The digitizer part number is written on the digitizer's cable. If you have the wrong version, then you can update the digitizers firmware.
These are the instructions from xda forums:
2. Root your device
2. Get the firmware https://github.com/dasunsrule32/prop...0.ekt?raw=true
3. Get it into the device:
adb push 02-3011-4820.ekt /data/local/tmp
4. Get yourself into the device:
adb shell
su
5. Delete touch firmware. After firmware update and reboot the device may update the firmware back to whatever is in the firmware folder which is the wrong firmware. It will kill the ic ability to update the firmware again. <---HELP NEEDED
In the shell:
rm /system/etc/firmware/touch *.etk
6. Update firmware:
touch_fw_update -u /data/local/tmp/02-3011-4820.ekt
I used Kingo to get root on mine.