It wasn't working earlier for me either. It looks like they have since taken it down. Hopefully they'll put it back up sometime soon with it
FULLY functional!
Update: It looks like the link is back up. Unfortunately, its doing the same thing as before. There is another link that does the same thing, but the other one actually works! Its not really a simulator, but more of a tutorial type thing.
http://www.sonyericsson.com/trytheph...m?window=popup