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4 pin 3.5mm (2.5mm) plug connector layout
4 pin 3.5mm (2.5mm) plug connector
Wiring for the 2.5mm 4-pole headset socket as on the SonyEricsson P800/P900/P910i cell phones.
The pinout should fit 28 devices/models. Click to list>
Pin Pin
Name		 Description
1 Tip Speaker 1 +
2 Ring 1 Speaker 2 +
3 Ring 2 Microphone + / Answer Button +
4 Sleeve Ground

The Answer button is connected to pin 3 and to the Ground.

 
Pinout status: +7 -0
According to 7 reports in our database (7 positive and 0 negative) the Sony Ericsson P800/P900/P910i headset / handsfree connector pinout should be correct.

Is this pinout
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Sony Ericsson P800/P900/P910i headset / handsfree connector visual pinout:click to enlarge
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