There are 3rd party devices that will allow that, and they are iPhone certified. I own one and it works great. It is a Belkin Lightning Audio + Charge RockStar. I believe it is available as an accessory in the Apple Store. Belkin Lightning Audio + Charge Rockstar - Apple
I cant listen to music while charging my iphone 7 Plus IOS 10.2.3 because a message is wrote that says accessory not supported on this iphone so can you fix this in the next IOS or something or at least give the iphone 7/7Plus users official apple headphone and charger cables
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How to get an charger and headphone adapter for iphone 7Plus IOS 10.2.3 work?