nurbs Isoporm Problem
 

I am making a Mobile Handset by using Nurbs

my isoporm Is arounded Veticle & horizently

my full body is compleated

but my problem is Mobile Screen how to do it

i can not define a screen area in surface

how to make it?

give me a solution

Draw a curve on the surface thats your screen and then trim the screen away from the body, move it down then create a surface between the body and the screen