This is an express delivery, payment collection. But it is best not to take this way, it is not safe, and it is not clear whether the courier company is formal. After all, the iphone is a valuable thing, and it is difficult to guarantee that the courier will not give birth to other tricks. Moreover, after receiving the money, the courier directly turned it over to the company for accounting. Where will it be returned to you? I've never heard of it ... you'd better adopt other payment methods, such as Alipay, Tenpay and so on, so that the secured transaction is safer.