According to http://www.phonescoop.com/phones/phone.php?p=147 , it should be on the left side of your phone.Originally Posted by 0l33l
Tell ya what - I'm going to go to Fry's tonight and and get the stuff to make up the cable. The 2.5mm has 3 conductors. In theory, one is for ground, one is for audio out (going to a 1/8"), and the other is mic in (1/8" as well).
I'll let you know how it goes.
P.S. You (being a programmer) should build us a BREW app so that CDMA phones will provide notification and caller ID as well . In theory, it should also be possible to get the thing to spit out GPS.