How long will the call records of telecom be kept?

China Telecom keeps a list of customers' short messages in the last six months. Customers can log in to the online business hall with their service passwords and short message verification codes. You can also go to the telecom business hall and have the staff print it out.

Query method of short message list in telecom online business hall;

Log in to the internet hall with your mobile phone number and user password-click self-service-click on the short message call list to query-enter the verification code on your mobile phone to query. As shown in the figure: