When you first install and open the MetaMask browser extension, you’ll be presented with a screen where you can create a new wallet or import an existing one. At the bottom of the screen, there are two pill-shaped buttons stacked on top of each other. Select the top, unfilled button labeled “Import using Secret Recovery Phrase”. You’ll then need to enter your seed phrase word for word, making sure to add spaces between words (but not after the last word). After that, you’ll pick a new password, which can be the same as your old password or a totally new password.
After selecting “Import,” you can access your mobile wallet from your desktop browser extension. You’re now ready to connect your wallet on your desktop device using MetaMask connection option. You will need to add any networks previously used and or any tokens you previously imported. You don’t have to do this to connect your wallet or to transfer your balance to your wallet, but check out “How To: Configure Your Metamask For Use With DESK” to finish getting set up.