On PC:
1.- Click on your profile photo in the upper right corner.
2.- Select “Settings and Privacy” and then “Settings”.
3.- Go to “Account Center”.
4.- Select “Profile” and choose your account.
5.- Click on “Name”, enter the new name and click on “Review Changes”.
6.- Finally, save the changes.
On iOS devices:
1.- Access the menu on the bottom right.
2.- Select “Settings and Privacy” and then “Settings”.
3.- Enter “Account Center”.
4.- Select “Profile”, choose your account and touch “Name”.
5.- Enter the new name, select “Review Changes” and save the changes.
On Android devices:
1.- Tap Menu on the top right.
2.- Select “Settings and Privacy” and then “Settings”.
3.- Access “Account Center”.
4.- Go to “Profile”, choose your account and touch “Name”.
5.- Enter the new name and select “Review Changes”.
6.- Save the changes.
Remember to follow the steps, and then you can change. However, it must be taken into account that it should not be offensive or similar, otherwise Facebook Will verify information and reject change requests.
Through: Facebook