Man, those menus look super
sexy. The rest looks pretty cool too, I guess.
I think you'll want to work on level generation. Not right now, mind you. You have something that works, and is a decent mix of hallways and rooms. My biggest qualm with what you have, however, is that it feels squished. Remember, just because you're building this for a phone, doesn't mean that everything has to be small.
I might also suggest somewhere along the line, adding special preconstructed pieces of the dungeon that can be added if a room meets the size requirement. Stuff like graveyards or lakes, or any number of other things. Just stuff to spice things up a litte. You could even have special levels that are based around one of these pieces, like a church to orcus or something.
Anyway, good luck! I'll be watching you