Method 2: Log in to official website of the courier company and click "Express Query". Generally, there will be express number query and mobile phone number query. Select "Mobile phone number query" and then enter your own mobile phone number to query. Notes on the use of express delivery: 1. It is best to destroy the mobile phone number on the express delivery form after receiving the express delivery, which can protect the privacy of users. 2. For more expensive goods, it is best for users to check in person when they get the courier. If the goods are damaged, they need to find the courier company to make claims. 3. When handing the express mail to the courier, in addition to signing the waybill, it is required that it must be signed, and the signature should be consistent with the badge worn, which is a handover with legal significance. 4. Before sending the express delivery, consumers must read clearly the clauses on insurance, compensation and exemption; If the daily express volume is large, it is suggested to sign another express contract with the express company to protect their legitimate interests.