How does Apple delete multiple messages at once?

1. First, open the settings in the mobile phone, then swipe the mobile phone to find and click information to enter the next interface.

2. In the information interface, slide your finger to find it, and click the information history to enter the next interface.

3. Click to save the information, then modify the time for saving the information, select 30 days or 1 year, and then click Delete.

4. Then restart the phone and click the information to view. You will see that the current information only keeps the information from a month ago to the present. Then manually delete the remaining information for one month.