Originally Posted by Holz
after hitting 'Q' and selecting an address book entry, do you still have to select a phone number or does it automatically select the mobile number and take you directly to the compose screen?
It defaults to the mobile number (i.e. the mobile number shows as selected/highlighted in the list of numbers displayed), but you still have to click to confirm it. This seems reasonable to me, since more than one number associated with that contact could be a mobile number. This gives you the option of choosing an alternate.