If you want to delete contacts from your iPhone’s messaging app, there are a few different ways to go about it. The first way is to open the Messages app and select the contact you want to delete. Then, tap on the three lines in the top left corner of the screen and select “Delete Contact.” If you want to delete all of your contacts from the Messages app, you can do so by opening the app and selecting “All Contacts” from the bottom menu. From here, you can tap on each contact and select “Delete.” Finally, if you only want to delete a specific contact from your Messages app, you can do so by opening the app and selecting that contact. Then, tap on their name in the top left corner of the screen and select “Delete.” ..