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guyz i have an working iphone8 unit with broken glass. 1. display was ok 2. touch digitizer was ok but : after i test the iphone7 original lcd screen ( i connect only the display connector didnt connect the touch id connector ) result : iphone8 was stuck on apple logo next step i put back its original iphone8 lcd screen both connectors are connected result : iphone8 touch digitizer not work :( Any ideas who encounter this issue? which on mother board got fault after test an original lcd screen from iphone7 please help