Random USDC spawned in my wallet but Only in phone app

Howdy everybody, I used to be wondering if someone might explain what happens, I created account very long time in the past. haven't used it for some time, at present I did my transaction usually and bought by USDT. I have no different belongings in any way but on Telephone app it exhibits I have 10 USDC , says USDC token, But once I open Binance on browser I don't have any USDC. Telephone says it is on Polygon community. I am new on this, is it some sort of pretend token or IDK. Thank you