yeah I agree with my, the buttons do look as though they are not a seperate entity from the rest of the phone. You could get a hold of one of these phones and see how it's constructed and then model the individual parts that might make it a bit easier.
Textures will obviously help it out majorly so I will check back with the thread soon.
Ps. I get my 3650 next week!!
Technical Director - Framestore
Currently working on: Your Highness