Facebook Message Requests wants to replace your phone number
Facebook wants anyone around the world to be able to message you on Facebook, but to do it, the social network is killing a part of your Facebook inbox you probably never knew you had. Facebook’s barely known and rarely used ”Other” inbox will soon be discontinued in favor of a new addition to Messenger called Message Requests.
If you don’t know what the Other inbox is, login to facebook.com/messages and at the top of the left-hand navigation panel you’ll see the “Other” heading. In there are messages from non-Facebook friends and Facebook pages. The idea behind “Other” was to deliver unauthorized messages—i.e. messages from non-friends—without overloading your inbox.