Answer to: How to fix this accessory may not be supportedNone of these solutions work. My charger works fine, the issue is the adapter for my headphones. This is really annoying. I have an apple lightning phone jack and a used iPhone 7 that I just purchased. Unbelievable that I have to trudge to the Apple store. I really hope someone there has a fix or I’m going to be extremely upset. I can’t stream my news or a video or anything using headphones. This is one of the most important functions of the iPhone for me.