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my iphone 6s plus can’t charge. i think this because flexible charger is damage. In my Country there’s only flexible charger iphone 6 plus. Can i replace with different type?

Are you talking about the charger port ribbon cable / flex assembly? Those two cables are physically different in both size and connector. It physically won’t fit. You need to use the one for your model. Color of the charging port and headphone jack does not matter however.