BlackBerry Bold

[Un1x]

Does anyone happen to have the pinouts for the Audio jack on the blackberry device if anyone does it would be greatly appreciated as it seams the headset i received with the unit is a 4 pin pole i dont know if its 3.5mm or 2.5mm but if anyone can help identifiy if its 2.5mm or 3.5mm would be greatly appreciated.. alongside the pinouts for them thanks

[mel]

it is 3.5mm
pinout is left(tip) right ground mic (base)

[Junior]

it is 3.5mm
pinout is left(tip) right ground mic (base)

I have a Blackberry bold. What are the pinouts for 3.5mm jack to a USB jack?
If possible, a layout would be good for both?
Thanks