I bought my turbo in store on 10/30 and was told the phone for the trade had to be the phone you were upgrading from. Im upgrading on a tiered line, transferring the phone to an unlimited line and would like to keep the s4 that is on that line. I left and said I'll just call customer service. Customer service took it one step further and said it had to be active for 3 months! I'm reading peoples posts saying they traded in phones they had laying around. Any advice? I'm not opposed to paying the 199 I did but if I can save 100 why not??