Thumbs down [Q] HTC A6363 touch screen problem........!!!

2 and half year back I have purchased HTC A6363 mobile second hand in Singapore. As I am attached to building construction I did't use regular at my site now i left that place and started to use phone but some problem with this now.

1) touch screen top area 2 mm space not working other even hard touching.

2) full battary charged after can use 15 hours only

3) some times touch screen get strucked

I have dome factory resetting still same

Is this touch software matter or any hardware problem as i lived Sri Lanka where to go where to buy anything this phone accessories/software

In case need re-install all software(android) how can i do alone or where to go?

Please could anyone have suggestion about these matters....!!!#
bye bye