dont even know if you can copy/paste on this phone w/o using the physical keyboard. yikes.
i'll go through the manual again, maybe i misread it
For the soft/virtual keyboard you do a long-press in the text box to get the same context menu as the D-pad on the physical keyboard. Then swipe the text with your finger. It's the same for Paste ... long-press in the text box and select Paste.
It's pretty easy to get used to.