How does Apple's mobile phone check the time of call records?

Below Settings, General, Usage, Cellular Data Usage and Talk Time are the cumulative talk time you want. Without downloading any software, the total time can't be found out. If you can't see it on your mobile phone, you can check the call records online.

Log in to the online business hall, enter the mobile phone number and service password to be queried, and the system will send a random password. Enter a random password to check the phone records in the last six months.

Query method steps:

First, connect the Apple iPhone SE phone that needs to restore the call record to the computer.

Install and open iTunes software on the computer, click the small phone icon in the upper left corner, and then back up all the data on Apple iPhone SE to the computer according to the operation sequence shown below.

Backup takes a long time, please be patient. After the backup is completed, please close the iTunes software and remove the Apple iPhone SE phone from the computer.