Pi network Is one year old projekt. Its first cryptocurrency that can be mined ONLY with mobile app, what makes it unique and perspective.
Mining doesnt affect your phone speed, because Its just cloud mining, which Is not using your CPU.
You have to know, Pi isnt real crypto yet, because Its not placed on Mainnet. Placing IT there Is planned for the end od 2021. If you decide to mine Pí, the only thing you have to do Is download the app And turn IT on every 24 hours. If you use my invitation code Honzahej youll get 1 Pi for free And get me to mining team, what increases your mining speed a bit.
I think that when its free, its worthed to try. Remmember…mining will be stopped after placing Pi on Mainnet, so start before it happens!