How to check the details of last month's phone bill package?

Hello, taking telecom as an example, telecom users can log in to the telecom online business hall with their mobile phone numbers and service passwords. The specific operation methods are as follows:

1. Log in to the telecom online business hall with their mobile phone numbers and service passwords

2. Enter the personal center-My bill

3. Select the month to query, and the online hall supports querying the consumption bills of the last 6 months.