Phantom is now available to use with Ethereum and Polygon dApps!
Although Phantom is not always on the list of wallets, you should still be able to connect to a dApp by selecting the MetaMask 
option.
If this is your first time connecting your Phantom wallet by selecting the MetaMask option you will be prompted with this pop-up.
If you chose "Always use Phantom" you will not be prompted with this pop-up again and your Phantom will be used every time you select MetaMask on a dApp.
Learn how to change your default wallet in your Phantom settings here.