I just bought a nokia lumia 635 today, have not opened it yet; waiting for accessories to come in the mail for the phone. My current nokia lumia 521 has preview for developers, I would like to unenroll on the 521 and enroll on the 635. Do I need to do anything special for it, this is my second windows phone; I like windows phone a lot but I am not too familiar as to what to do. Help/guidance will be greatly appreciated.