I only know how to check the trombone when the other trombone is known.

Look at the address book, look at the inbox, call the operator's service hotline, and send a message to a specific number for inquiry.

1. Search in the address book: If there is a cornet in the address book, open the address book application, click the search box to enter the cornet, and click Search, and the corresponding trombone may be displayed.

2. Search in the inbox: If the short number has sent you a message, open the SMS application, enter the inbox, enter the short number in the search box and click Search, and you will find the corresponding message and the trombone contained in it.

3. Call the operator's service hotline: Call the operator's service hotline and tell him that he needs to inquire about a long number corresponding to a short number. According to the prompt button, enter the short number to be queried and press the OK button. If the trombone corresponding to the cornet is recorded in the operator's system, the corresponding trombone information will be displayed to you.

4. Send a message to a specific number for inquiry: If you are inquiring about a member on the same network as this computer, you can send a message for inquiry. For example, in a short number trunking network, sending a short number to 10657000 can find the corresponding long number. Friends and relatives network, send CXJT to 10086 to find out the trumpet and trombone of all members in the network.

5. The mobile phone number, also called mobile phone SIM card, consists of 1 1 digit, and is a mobile communication terminal device. Regardless of GSM system or CDMA system, users of digital mobile phones will get a mobile phone card when they "access the network".