mobile

i have U.S samsung galaxy s3 sch r530.
the main board doesn't work and a friend has main board s3 Verizon i535 and wont to bay it, but first i need to be sure if it will fit and work.
So the idea is to put Only the Main board of samsung galaxy s3 verion i535 to lcd display frame and all components of U.S samsung galaxy s3 sch r530.

I need help

thanks.