One of the most useful features of MetaMask Mobile is its built-in browser.
This enables you to use your MetaMask wallet to interact with dapps directly on your smartphone, without having to access a desktop browser. You must access dapps using the in-app browser in MetaMask, rather than any other browser available on your device. On other mobile browsers, you won't be able to connect to dapps using MetaMask.
In this guide, we'll use the classic blockchain video game Cryptokitties as an example, but the steps are essentially the same for any web3-enabled website:
Make sure you've selected the account you want to use for accessing dapps. To do this, tap on the account selector and pick the account you want to use:
Open the browser by tapping the browser icon in the tab bar:
Open a new tab using search bar, or by clicking the magnifying glass icon, and navigate to the website or app you need:
As with most web3 applications, Cryptokitties asks to connect to your wallet. Here's the real convenience of the MetaMask Mobile browser: you've already selected your account, so it's all queued up and ready. With a tap, you can sign in with that account and start playing:
Keep in mind that the browser is not as fully-featured as a standalone mobile browser application such as Chrome or Firefox. There may be things that don't work. But if you're trying to mint an NFT on the go, or check out a new web3 project that you might want to spend some time on later, it's just the right solution.
Also, keep track of what applications you give permissions to, and be careful which permissions you give them. (Though dapp connections are much more innocuous than their potentially dangerous relative, token approvals.) Find out how to manage dapp permissions here.