I was speaking about French. In French, most nouns have genders. Usually, the gender is well defined but for some nouns like Wifi, the gender is different depending on the area or even across people. Where I live, wifi is mostly masculine, but you hear the feminine form often enough. Usually from people from the South West of France but not exclusively.

You can notice the gender of the noun from the article: le wifi, un wifi, or from the adjectives qualifying it, if any.