Apple i phone 3gs 16gb FAULTY .

Apple i phone 3gs 16gb FAULTY phone was previously dropped and screen smashed i have since had the screen replaced but there is no light showing but you can ceen the phone on but is very dimm- i have restored it with itunes- and it was unlocked- since unlocking it doesnt recognise my sim now but it does come on and works regardless of this, but scree is verry dim- mabee an easy fix for someone sctreen obviously good a s its a new screen the back is wuite maked and oitted 07905540940