Hello, I bought a Lumia Icon off EBay and I'd like to know if I'm going to have any issues getting it set up on either the prepaid or single-line plans. I think I read somewhere that it's not eligible for prepaid since it's a 4G phone, but I don't know why since I thought all 4G phones will use 3G if 4G isn't available. Can someone explain this to me? Also, is the phone eligible for the single-line plan or will I be forced to use a more expensive month-to-month plan? Lastly, will be able to order a new SIM card online, and if so, are there separate prepaid/postpaid SIM cards? The guy who sold it to me left the previously-activated SIM card in the phone so I assume I'll need a new one.