Using the same wallet on multiple devices
This article covers using a single MetaMask wallet in multiple locations. If you want to read about using multiple wallets, see here.
One of the benefits of using MetaMask is that you can use your Secret Recovery Phrase or Google/Apple account to access your wallet on multiple computers or smartphones. You're not bound permanently to any single device.
To access your MetaMask on a new device, login via your Google or Apple account and enter your MetaMask password to automatically import all the wallets and accounts associated with that login. If you do not have a Google or Apple account connected to your MetaMask, you can use your Secret Recovery Phrase to restore your wallet.
If you use your Secret Recovery Phrase, you'll need to set up a password again, and re-add any networks or tokens that you need. This is because this data is saved locally in each instance of MetaMask. However, if you use your Google or Apple account, you will not need to set up a password again, and all of your networks and tokens will be automatically imported.
If you have more than one address (account) associated with your Secret Recovery Phrase — i.e. you used the'Create account' button at some point — they will be restored automatically if they have a non-zero balance of ETH. Otherwise, you can just add them back by hitting 'Create account' again until you have all the ones you need. Read more here.