audio - Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone splitter jack? - Electrical Engineering Stack Exchange
iPhone Headphone plug pinouts
Use Apple headphones with your iPhone, iPad, and iPod - Apple Support
How To Repair Iphone Earphone Wire?
Wire, Diagram, Pole
Iphone Headphones With Mic Wiring Diagram - Iphone Headphone Diagram | Full Size PNG Download | SeekPNG