Always wondered why does a SpeakerPhone profile exist on my X Phone - i didnt know how to activate it (SpeakerPhone) till a few days ago... You actually need to hold the Call button (yeup, the green button u use to answer or to make a call) for a few seconds when in call (or dialing) to activate your SpeakerPhone.
I prob. may be the last one to get this ..but its really coool....
Jeelz