How to Sync Your Instagram Contacts to Facebook Messenger
Keeping up with your friends on all the various social networks you share can be an organizational pain. Now, however, Facebook is making this a tiny bit easier by allowing you to bring your Instagram contacts into Messenger, which also syncs your Instagram and Messenger conversations. If you go through with the merge and transfer all of your contacts from Instagram into Messenger, your Instagram username and account also will also be visible to others in your Messenger chats—so they can go stalk your pet pictures, of course.
Jul 19, 2018 ... To connect the two services, launch Messenger on your phone and tap on your avatar. On the list that appears, select “People,” and then tap on “ ...