Facebook symbols are not included in facebook. Facebook doesn't provide these. But these facebook symbols can be used in the name, status, message and comments etc.
Facebook symbols: How to insert
For Desktop Users:
To insert these basic symbols in facebook, all you have to do is to press and hold left Alt key and then put in the code from the list below. Use the number pad on the right side for this.
For Laptop Users:
I hope you found these facebook symbols interesting. Please do comment about these symbols.