Sgs3 Headset

The EHS64 headset has a 3.5mm plug. Standard headsets have 3 pins, however phones need more functionalities as microphone and buttons. Therefore the 3rd pin that is usually ground is split into two rings a ground and a microphone ring. This does not explain how the buttons are read. The buttons switch resistors parallel to the microphone and due to the resistance change the device figures out what buttons are pressed.

Note

Iphone headsets are not compatible to the sgs3 if it comes to buttons and microphone. However listening to sound works well


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