The usual spelling in the US is “phony”; the usual spelling in the UK and in some countries influenced by it is “phoney.”

What is the plural of phony?

phony. noun. variants: or less commonly phoney. plural phonies also phoneys.

Does fake and phony mean the same thing?

or pho·ney

not real or genuine; fake; counterfeit: a phony diamond. false or deceiving; not truthful; concocted: a phony explanation. insincere or deceitful; affected or pretentious:a phony sales representative. noun, plural pho·nies.