I currently have three phone lines, all in my name with AT&T. One for me, one for my wife, and one for my wife's work. I wanted to upgrade my wife's 3GS to a White iPhone 4, but she is not eligible for the discounted upgrade until next April. However, her work phone is eligible. Would I be able to upgrade her work phone, (piece of junk LG Shine) and activate/switch it to her current phone number without any penalty since it is all on the same account anyway?