you can manage multiple accounts in facebook messenger by following this simple steps:-1) Open facebook messenger on your iPhone and tap on settings 2) Tap on Accounts options, under settings 3) Tap on + symbol 4) Enter your Username and Password and tap on Add button. To signed in, Tap on Continue. That’s all folks. Regards
https://forums.imore.com/iphone-apps-games/242939-manage-multiple-facebook-accounts.html

