1.
Download the MetaMask Application from the Appstore or Playstore.
2.
Create a new wallet or import your existing wallet.
(importing an existing wallet requires your 12 secret words).
3.
When logged in, go to settings by pressing the hamburger menu at the top left.
4.
Go to ‘Networks’.
5.
Click on ‘Add network’.
6.
Add ‘Polygon Mainnet’.
7.
Go to wallet.
8.
And click on the tab ‘NFTs’.
9.
Click on ‘import NFT’.
10.
Paste the code (at the bottom of the NFT page).
11.
Insert the ID (the number of your NFT).