STEP 1 – Open Facebook Messenger
STEP 2 – Open Chat (With Someone or Yourself) By Mistake i Chat With Business Page (Please Do it With Any Person)
STEP 3 – Find The Moon Emoji
STEP 4 – Send it Once And Suddenly Moons Will Shower And Facebook Messengers Dark Mode is Unlocked As i Already Did So I Did’t Got The Option of Change to Dark Mode in Settings.
FOLLOW THESE STEPS IF THE UPPER ONE DOES’T WORK FOR YOU | WE WILL FIX THIS ISSUE EASILY STEP BY STEP
STEP 5 – Click on The Image in Chat or You Can Go To Messenger Settings And Do The Next Step to Unlock it
STEP 6 – Now Click on Emoji (The Default is Thumbs up.
STEP 7 – Now Choose This Moon Emoji From Here as Default As in Image Below .
STEP 8 – Now You Can See Our Default Emoji is Changed From Thumbs up To Moon. Click The Moon From Here.
STEP 9 – When You Followed Step 8 This Section Will Appear And BOOM Your Facebook Messenger’s Dark Mode is UNLOCKED!