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Which number should China Unicom call to check the remaining traffic?

1. Send a short message "CXLL" to 100 10 to inquire about traffic usage. 2. Send SMS "TCYL" to 100 10 to inquire about the remaining information of the package, including the traffic situation. 3. You can check the package and traffic usage through the online business hall or mobile phone business hall of China Unicom.