Price Difference Link Not A Product Sale

Upgrade exchange only important note: this link is not a product it is only used to make up the price difference and pay the replacement gap fee. Please do not place an order before confirming the replacement upgrade with customer service. 1. This link is only for customers who need to upgrade or exchange their product. Before placing an order, please contact customer service and provide the following information: original order number and serial number the original model and sku of the device to be replaced the target model and sku of the device to be replaced 2. Once customer service confirms the amount, they will send you a price difference link to pay your order.

Upgrade exchange only important note: this link is not a product it is only used to make up the price difference and pay the replacement