Open the Facebook app or website
Go to Menu or your profile picture
Tap Settings & privacy
Tap Settings
Open Accounts Center
Tap Personal details
Tap Name
Enter your new name
Tap Review change
Enter your password if prompted
Tap Save changes
Open the Facebook app or website
Go to Menu or your profile picture
Tap Settings & privacy
Tap Settings
Open Accounts Center
Tap Personal details
Tap Name
Enter your new name
Tap Review change
Enter your password if prompted
Tap Save changes