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i had a iphone 6s plus that came in dead so we tested a new battery and charging port and it worked fine and charged. But when we fitted both parts it switched on but will not charge. I no its not the parts as i tried a couple of parts just in case. anyone have any ideas
did you check the motherboard port for the lighting ribbon cable? i have had customers come to me with tiny bits of sand in there that stops the connection between the ribbon cable and the mobo.