What should I do if I don't select all the messages in my body?

The captain presses the message, then selects Select All, and then selects Copy, Paste and Send. Mobile phone selection is generally based on what you want to operate without moving, and then an option will pop up, in which there is a choice, just click Select.

If you use a vivo phone, you can enter a message-long press a message-and then click Delete to delete the message; After entering information, click Edit-Check Information-Click Delete in the upper right corner to delete messages in batches.

After entering the message, click the edit icon in the upper right corner-Check the message-click Delete to delete the message in batches.

After entering information, click Edit-Check Information-Click Delete in the upper left corner to delete messages in batches.