Thank you for purchasing Digital Technology Co., Ltd. Shanghai Nian Han vivoice videophone product! To protect your personal use of the product in the process of interest, Shanghai Nian Han Dynasty to provide you with product "three guarantees" service. Please buy products, to sell units available to purchase vouchers, and carefully fill in "Service Credit Card" and the "warranty card", and properly kept.
Your use of the process, if you have any questions, please feel free to Contact.
We provide the following services for your online reference:
　　 1、Video Phone Frequently Asked Questions
　　 2、Download