Hi all, currently I have a new S3 Marble White sealed in the box. Initially I wanted a PB but maxis said the waiting list for it is too long so I took the MW.

Question is, can I take the phone to any Samsung shop and replace the casing to PB with additional charges?

or replace my new MW with a new unit PB with additional charges?

(I know I can sell my MW to other people and buy back a new PB but that will take too much time)