Here I am a 26 yr old male and phone sex is something I've never done. It seams like it could be pretty hot and my partner may be up for it, but I've no idea how to approach it.
What are your experiences with it? Women, how does it treat you?
it kinda doesn't work if you blurt out, "hey, wanna try [x]", IMX. if you two are usually vocal or (better still) actively discuss fantasies during lovemaking, then this is a very easy place to go. if you aren't like that/don't do that, then consider that as a way towards it.
that said, i suspect that there's a good number of people w/ a lot of ideas here.