Problem is that your IMEI can get blacklisted MONTHS later for non-payment of a previous phone bill. A guy at work has an iphone 5c that he transferred to Cricket from Verizon service, and it quit working after several months on Cricket due to he never paid his last bill on Verizon for $106. So Cricket store staff confirmed that his phone quit working because his IMEI got blacklisted for this reason. He went and paid his last Verizon bill, but now must wait another few months to get his IMEI ban lifted... He bought one of their cheaper android phones for the meantime.