Don't know if this is the right place to ask but I'll go for it anyways. I wanted ask if anyone knows that if I were to buy an unsubsidized iphone 4 at full retail price, will I lose my eligibility for an upgrade later in the future? I guess what I'm trying to ask if I buy one now, will they let me buy another later on in my contract? Just wondering since I can upgrade now with the $400 option. Reason I want to do this is because I want to stay clear and not be locked down to AT&T just in case any news from Verizon might pop out. Thoughts?