Metamask: How do I log in to Metamask from the web app on mobile devices?

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Connecting Metamask to your mobile web app

Since you are using Web3.js on your computer and want to access your MetaMask balance from the mobile application, you will need to complete the following steps. This article will guide you through this process.

Step 1: Enable Web Application Access (WAX)

To enable WAX ​​(Web App Access) in MetaMask, follow these steps:

• Open MetaMask on your computer.

• Go to
  Tools

  

  >
  Advanced Settings

  .

• Scroll down to the “Enable Web App Access” section and toggle the switch to the right.

Step 2: Install MetaMask for Desktop

For Android devices:

npm install metamask

For iOS devices:

pod install Metamask

Step 3: Initialize MetaMask on Mobile

• Open the mobile application and go to
  Settings.

• Scroll down to the Web Applications section and toggle the switch to enable WAX ​​(Access to Web Applications).

• Now you can access MetaMask from your app.

Step 4: Connect to WebAppAccessProvider

To connect to WebAppAccessProvider, you need to use a provider that allows MetaMask to interact with your desktop application. One of such providers is web3 provider.

Here is an example code snippet:

import { ethers } from 'web3-provider';
const provider = new ethers.providers.Web3Provider(window.ethereum);
const metamaskAddress = 'YOUR_METAMASK_ADDRESS'; // Replace with your MetaMask address
// Get the current balance of your MetaMask wallet
async function getMetamaskBalance() {
const accounts = await provider.getAccounts();
return await accounts[0].balance;
}
getMetamaskBalance().then((balance) => console.log(balance));

Step 5: Integrate with your web application

To integrate web3 provider with your desktop application, you can use a library like react-web3-provider. Here is an example code snippet:

import { ethers } from 'web3-provider';
const provider = new ethers.providers.Web3Provider(window.ethereum);
export const getMetamaskBalance = async () => {
return await provider.get balance();
};

Tips and Variations

• Be sure to replace YOUR_METAMASK_ADDRESS with your actual MetaMask address.

• If you are using a custom provider, make sure it is configured correctly for WAX (Web Application Access).

• For Android devices, be sure to enable “Web applications” in the application settings.

By following these steps and adapting this guide to your specific use case, you will be able to connect to MetaMask from your mobile web app using Web3.js. Happy coding!