Pinouts >  Headsets, Headphones, Handsfree - mobile phones and other equipment  >  HTC pinouts
4 pin 3.5mm (2.5mm) plug connector layout
4 pin 3.5mm (2.5mm) plug connector
at the headset cable
The pinout should fit 6 devices/models. Click to list>

Wallaby (O2 Xda, Qtek 1010, 1020, Siemens SX56, T-Mobile MDA, Dopod 686) headphones:

Pin Signal Description
1 (Tip) Left ear White
2 (Ring 1) Right ear Red
3 (Ring 2) Mic/switch Blue. Short this pin to GND to pick up the phone
4 (Sleeve) Ground Copper



 

Headphones for Blue Angel (O2 Xda IIs, O2 Xda III, Dopod 700, I-mate PDA2k, T-Mobile MDA III, Orange SPV M2000, Qtek 9090, Siemens SX66.

Pin Signal Description
3 (Ring 2) Left ear  
2 (Ring 1) Right ear  
4 (Sleeve) Ground  
 
Pinout status: +5 -0
According to 5 reports in our database (5 positive and 0 negative) the O2 Xda, Qtek 1010, 1020, Siemens SX56, T-Mobile MDA, Dopod 686 (all Wallaby) headphone / headset / handsfree pinout should be correct.

Is this pinout
NO DIY devices
O2 Xda, Qtek 1010, 1020, Siemens SX56, T-Mobile MDA, Dopod 686 (all Wallaby) headphone / headset / handsfree visual pinout:click to enlarge
Source(s) of this and additional information: wiki.xda-developers.com
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