[Q] not original digitizer? lg g pro from aliexpress topic

Hello , i just bought a lg g pro for my father from aliexpress
http://m.aliexpress.com/item/1424364948.html
He didnt say something about refurbished phone
First i saw tha the camera pics is very low quality ( i wll upload some pics)
Second touch is a little weird . it has an accuracy error and sometimes i can touch anything
Any thoughts? ?
ps: i cant find software update check . it has 4.1.2
thanks

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