I had just recently purchased the Nokia Lumia 920 with Windows 8 operating system. I had ordered and gotten two backup phones with Windows 7.5 (both Samsung Focus and Samsung Focus Flash) and one question I have is.....Suppose my Nokia Lumia went bad (in this case either broke or had some sort of damage), and I decide to switch my sim card from the Lumia to the Samsung Focus phones, will I have to contact AT&T regarding the fact I moved the Sim to another type of Windows phone that's branded by AT&T? It's only from Windows phone to Windows phone, not any other phone operating system, so hope I can just experiment, and also use my Lumia properly.
Thanks
Thanks