How does Android delete all messages?

Click the menu button in the text information interface, and the following options will pop up (multi-selection, composition and information setting). Select this option (multiple choices). After clicking (multi-choice), you will find that there is a (checkmark) in front of each information avatar. You can selectively delete messages by clicking the checkmark and then clicking Delete. If you need to delete all messages, click the menu button (. There will be an (Select All) option. Click Select All, and you will find that the check boxes are all green. At this point, the delete button is also open. Click Delete to delete all messages.