How to upgrade to a five-star user?

Customer grading service refers to the grading service provided by China Unicom to mobile phone users who have been on the Internet for more than six natural months (from the month of access, that is, the seventh natural month) and meet the requirements of the real-name registration system for 4G, 3G, 2G and 2G/3G converged services (excluding wireless network cards). The grades are divided into "five-star customers", "VIP customers" and "loyal customers" according to the historical consumption amount and online time of users. Star-rated customers can send short messages CXXJ to 100 10 to check your star rating and expiration date for free. You can also inquire for you through the telephone hall, Internet hall, business hall or call the customer service center at 100 10.