How to delete a single call record and SMS record on Apple's 8GB mobile phone?

Call records cannot be deleted separately, only all records can be clearly identified, and SMS records can be deleted. The specific operation is as follows: 1. Select the message to delete, and the message content will appear. 2. Select Edit in the upper right corner to enter the editing page. 3. There is a circle in front of the message, and a check mark will appear after clicking the circle. Check all the messages that need to be deleted, and then select Delete in the lower right corner.