I want to answer your questions.
1. Phi is a Greek letter, which belongs to all human beings.
2. Phicoin is a coin, an asset mined by miners using the PoWer mechanism, not a token.
3. PHI is the abbreviation of The PoW High-Performance Infrastructure, which will be different from all other projects called phi.
last bullrun there was a scam coin called phi,it was using the same ticker as a legit coin called phi on coinbase,seems like a repeat because there is still a legit coin on coinbase called phi and its not this one...
here is the real phi
https://coinmarketcap.com/currencies/phi-token/They even almost perfectly copy the logo..just some minor differences.