1. You can log in to Unicom China Unicom APP with the mobile phone number you need to inquire, and click "Service > Inquiry > Account Details Inquiry > SMS MMS Details";
2. Log in to the online business hall of Unicom China Unicom, click "Query > Other Business Query > SMS and MMS Details", and enter relevant verification information according to the page prompts.
Tips: At present, Unicom mobile phone users can inquire about the detailed list of SMS and MMS in the last six months (including the current month).