samsung SPH-A420 pinouts
The connector/pinout information may be applied to the samsung (show all pinouts) model SPH-A420
Samsung SPH-a420, a580, a640, m220, m240, m300, m320, m330, Rant m540, Exclaim m550 SCH-R451C headset pinout Samsung headset P/N: AEP010SLEB/STD
Samsung i300, i330, i500, i700 handsfree / headset connector pinout
MRLG 4-pole 2.5mm headset connector pinout MRLG pinout