Who can tell me how to insert the phone number of the phone book when sending a text message?

If you choose to insert content when editing a short message, and then choose a business card, send it in the nearest form; If you only need to insert the number into the text, you should first go to the contact in the business card folder, select View Details, select the number, and then select Options-Extract Number-Copy, so that the number will be on the clipboard. Return to the interface of editing information, and CTRL+V can be pasted.