I am a current Verizon prepaid customer. I want to buy a Verizon postpaid phone from the Samsung site because they are offering a trade-in bonus. Can I activate that phone on my Verizon prepaid account or will it be locked unless it's activated on a Verizon postpaid account for 60 days? I can't use the BYOD page because I obviously don't know the IMEI. Thanks