What should I do if I delete Unicom's call records and SMS records?

Call list records are records in the system and cannot be deleted. If you don't want others to inquire, it is recommended to keep the service password of your mobile phone number. The call records on the mobile phone can be deleted, and different mobile phones can operate according to the instructions of the mobile phone. For example, iPhone supports deleting call records, which can erase all call records. After upgrading iOS5, you can delete a single call record. If the mobile phone user of Android needs to delete the call record, enter the call record > select the call record to be deleted > long press the record, and the shortcut key > select "Delete from the call record" function will appear.