Metamask: iOS app Cannot connect to Metamask by using WalletConnect protocol

Metamask iOS App Connectivity Issue: Unable to Connect with WalletConnect Protocol

As a developer building decentralized applications (dApps) on the Ethereum blockchain, understanding and troubleshooting connectivity issues is crucial. Recently, I encountered an issue while using the WalletConnect Swift SDK in my iOS app to connect with MetaMask. The problem was that the app would not display the connection permission popup from MetaMask even after successfully connecting.

Symptoms

• The user can rarely see the “Connect” or “Authorize” button in the MetaMask pop-up.

• After successful connection, the app returns to its dApp and displays an empty screen with no error message.

• When trying to access or interact with the dApp’s features, the user is not prompted to authorize or connect using MetaMask.

Troubleshooting Steps

To resolve this issue, I followed these steps:

• Check WalletConnect configuration: Make sure that WalletConnect is properly configured in your MetaMask app and that it has the necessary permissions.

• Verify app permissions: Ensure that your iOS app has the required permission to access MetaMask’s wallet data. You can do this by checking the “Wallet” section of the MetaMask app in the Settings app.

• Test with a different provider

  : Try connecting using another WalletConnect provider, such as Ledger or Trezor, to see if the issue is specific to Metamask.

• Check for updates: Ensure that your MetaMask and WalletConnect Swift SDKs are up-to-date.

Troubleshooting Code

If none of the above steps resolve the issue, here’s a sample code snippet demonstrating how to display the connection permission popup using WalletConnect protocol:

import WalletConnectSwift


class ViewController: UIViewController {

    

    let provider = WCBProvider()

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        // Set up provider and configure permissions

        provider.setProvider(with: "MetaMask")

        provider.setPermissions([.delegate, .controller])

        

        // Display connection permission popup

        provider.delegate?.displayPermissionController(on: self)

    }

}

Additional Tips

To improve the user experience and troubleshoot issues more effectively:

• Use a debugging tool, such as WalletConnect’s built-in debug feature or a third-party logging library.

• Consider adding error handling and logging mechanisms to your app to help identify and diagnose connectivity issues.

• Review MetaMask’s documentation and settings for any potential configuration or permission-related restrictions.

By following these steps and troubleshooting code snippets, you should be able to resolve the issue with displaying the connection permission popup from MetaMask in your iOS app using WalletConnect protocol.