What, you may ask, can I possibly say about the Talk key on a Windows Mobile Smartphone (aka Standard Edition)? There’s three functions assigned to that key. Let’s start with the obvious and work our way down the list.
1. If you press the Talk key while the phone is ringing, the phone will pick up the call and let you talk to the other person.

2. If you press the Talk key when no call is in progress, it will bring up your recent call history. You can use the navigation pad to scroll up and down the list. Pressing the Select key (center of navigation pad) brings up the contact information for that call (if available).

3. If you press and hold the Talk key while a call is in progress, it switches you from normal listening mode to speakerphone mode if your phone has speakerphone capability.