For iPhone 3G Charging Dock Port Assembly ,Use the logic board to test ... sure 100% working well,Fast shipping. For iPhone 3G Charging Dock Port Assembly: 1.We use the logic board to ... test well one by one ,For sure the dock assembly can charging,speaker sounds clearly and antenna have good signal ... than 500pcs/time ,can have more discount.4.the charging flex cable,speaker,antenna use is A -Grade quality ...