Mobile Wallet Not Detected (Coinbase Wallet Looping on Install Prompt) – React + Web3Auth Modal

[Asuddle]

Package: @web3auth/modal
Network: SAPPHIRE_MAINNET
Platform: React Web
Issue Type: Mobile Wallet Connection Failure (Coinbase Wallet)

🔥 Issue Summary

I’m using Web3Auth on Mainnet through the dashboard and have integrated it into a React web application.
The integration works flawlessly on desktop browsers, but mobile/responsive devices are experiencing wallet connection problems.

Specifically, when using Coinbase Wallet, Web3Auth goes into a continuous loop:

Prompts to install the Coinbase Wallet app

Redirects to App Store / Play Store

Returning to browser still shows “Install Coinbase Wallet”

Wallet is never detected

No connection is ever established

This issue only occurs on mobile browsers.
Desktop wallet connections work perfectly.

📱 Reproduction Steps

Integrate Web3Auth Modal with default configuration.

Build React web app for mobile/responsive use.

Attempt to connect using Coinbase Wallet.

Observe repeated “Install Coinbase Wallet” loop.

Wallet never connects.

📌 Expected Behavior

Mobile device detects Coinbase Wallet is installed

Redirects into the app

Connection flow completes normally

User is logged in / connected

🧪 Actual Behavior (Mobile Only)

Always redirected to “Install Coinbase Wallet”
→ even when the wallet app is already installed

User returns to browser

Web3Auth still says wallet is not installed

The flow repeats indefinitely

No connection succeeds

🧩 Environment Details

SDK: Web3Auth Modal

Network: SAPPHIRE_MAINNET

Framework: React (web)

Adapters: Default adapters (no custom WalletConnect setup)

Platform: Mobile Safari / Chrome on iOS & Android

Wallet: Coinbase Wallet Mobile App

❓ Questions / Help Needed

Is explicit WalletConnect configuration required to support Coinbase Wallet on mobile?

Is there a recommended configuration for mobile wallet detection in React apps?

Is this a known issue with Coinbase Wallet deep linking or universal links from Web3Auth?

Are there specific settings required in the Web3Auth Dashboard for mobile support?

[JPCompany544]

Hi,

I see the issue clearly, on mobile, Web3Auth seems to struggle detecting installed wallets via deep links. Even when Coinbase Wallet is installed, the user gets stuck in the “install app” loop, which is very confusing.

From a UX perspective, a few improvements could help:
– Clearly indicate that mobile wallet detection may fail and show next steps (e.g., “Tap here if wallet already installed”)
– Offer guidance for users on what to do if they are stuck in the install loop
– Consider a fallback mechanism when universal links/deep links don’t resolve

I’ve reviewed several mobile wallet flows for trust and UX asynchronously and could provide a short structured review for your setup if useful.