Joke Collection Website - Blessing messages - How does Unicom check the mobile phone tariff by SMS?

How does Unicom check the mobile phone tariff by SMS?

you can check the account balance in the following ways: 1. menu navigation: edit any character (excluding valid SMS instruction) directly and send it to 11, and the system will return to the main navigation menu of SMS business hall, and then reply to the specific menu number to 11 for the next operation. 2. Send "CXYE" or "YE" to 11.