Default Need help! Difference between T320 and T320e?

Hello ,ive been repairing this phone for my dad and first i wanted to know - what is the difference between T320 and T320e? As i tried to replace the screen and the display works but the touch isnt,the part is for T320e but the phone is T320 ,back at the time when i had an htc i remember them sometimes having different touchscreen vendors like synaptics etc. Could you give me some info please? Thanks in advance

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