Sony Ericsson T637 pinouts
The connector/pinout information may be applied to the Sony Ericsson (show all pinouts) model T637
Ericsson handsfree HPB-20 schematic pinout for use with SonyEricsson and Ericsson R-, T-, A- series. Not for T1x, R250, A1018, T206.
Sony Ericsson P800/P900/P910i headset / handsfree connector pinout Wiring for the 2.5mm 4-pole headset socket as on the SonyEricsson P800/P900/P910i cell phones.
MRLG 4-pole 2.5mm headset connector pinout MRLG pinout